CN116574292A - Mobile phone glass optical film based on starch biological material - Google Patents
Mobile phone glass optical film based on starch biological material Download PDFInfo
- Publication number
- CN116574292A CN116574292A CN202310861280.4A CN202310861280A CN116574292A CN 116574292 A CN116574292 A CN 116574292A CN 202310861280 A CN202310861280 A CN 202310861280A CN 116574292 A CN116574292 A CN 116574292A
- Authority
- CN
- China
- Prior art keywords
- parts
- starch
- optical film
- amylose
- base film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920002472 Starch Polymers 0.000 title claims abstract description 65
- 239000008107 starch Substances 0.000 title claims abstract description 65
- 235000019698 starch Nutrition 0.000 title claims abstract description 65
- 239000012788 optical film Substances 0.000 title claims abstract description 42
- 239000011521 glass Substances 0.000 title claims abstract description 25
- 239000012620 biological material Substances 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 55
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 53
- 229920000881 Modified starch Polymers 0.000 claims abstract description 47
- 239000004368 Modified starch Substances 0.000 claims abstract description 47
- 235000019426 modified starch Nutrition 0.000 claims abstract description 47
- 229920005989 resin Polymers 0.000 claims abstract description 46
- 239000011347 resin Substances 0.000 claims abstract description 46
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 43
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 43
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 43
- 239000001913 cellulose Substances 0.000 claims abstract description 42
- 229920002678 cellulose Polymers 0.000 claims abstract description 42
- 239000010408 film Substances 0.000 claims abstract description 40
- 229920000856 Amylose Polymers 0.000 claims abstract description 39
- 239000004014 plasticizer Substances 0.000 claims abstract description 29
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 12
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims abstract description 10
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 10
- 239000000661 sodium alginate Substances 0.000 claims abstract description 10
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 10
- 229920002101 Chitin Polymers 0.000 claims description 43
- 239000002585 base Substances 0.000 claims description 39
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 38
- 239000002121 nanofiber Substances 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000011248 coating agent Substances 0.000 claims description 25
- 238000000576 coating method Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 22
- 239000002608 ionic liquid Substances 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 19
- 239000011787 zinc oxide Substances 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 18
- 238000000227 grinding Methods 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 16
- 239000007888 film coating Substances 0.000 claims description 13
- 238000009501 film coating Methods 0.000 claims description 13
- 238000004090 dissolution Methods 0.000 claims description 12
- -1 polybutylene succinate Polymers 0.000 claims description 12
- 239000002244 precipitate Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 10
- 229920002961 polybutylene succinate Polymers 0.000 claims description 10
- 239000004631 polybutylene succinate Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 9
- 239000012153 distilled water Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 238000003672 processing method Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 108090000637 alpha-Amylases Proteins 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 3
- 239000004626 polylactic acid Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 claims description 2
- 230000001413 cellular effect Effects 0.000 claims 4
- 239000002105 nanoparticle Substances 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000006731 degradation reaction Methods 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 10
- IAXXETNIOYFMLW-UHFFFAOYSA-N (4,7,7-trimethyl-3-bicyclo[2.2.1]heptanyl) 2-methylprop-2-enoate Chemical group C1CC2(C)C(OC(=O)C(=C)C)CC1C2(C)C IAXXETNIOYFMLW-UHFFFAOYSA-N 0.000 description 7
- 239000000178 monomer Substances 0.000 description 7
- 238000006065 biodegradation reaction Methods 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000036541 health Effects 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004108 freeze drying Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000005457 ice water Substances 0.000 description 2
- IAZSXUOKBPGUMV-UHFFFAOYSA-N 1-butyl-3-methyl-1,2-dihydroimidazol-1-ium;chloride Chemical compound [Cl-].CCCC[NH+]1CN(C)C=C1 IAZSXUOKBPGUMV-UHFFFAOYSA-N 0.000 description 1
- WSQZNZLOZXSBHA-UHFFFAOYSA-N 3,8-dioxabicyclo[8.2.2]tetradeca-1(12),10,13-triene-2,9-dione Chemical compound O=C1OCCCCOC(=O)C2=CC=C1C=C2 WSQZNZLOZXSBHA-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108010028688 Isoamylase Proteins 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000000415 inactivating effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920005586 poly(adipic acid) Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B30/00—Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
- C08B30/20—Amylose or amylopectin
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/02—Cellulose; Modified cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/12—Amylose; Amylopectin; Degradation products thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/04—Alginic acid; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Biochemistry (AREA)
- Plant Pathology (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a mobile phone glass optical film based on starch biological materials, and belongs to the technical field of optical films. The invention discloses a mobile phone glass optical film based on starch biological materials, which comprises a base film layer and an antibacterial layer, wherein the base film layer is in fit connection with the antibacterial layer, and the base film layer comprises the following raw materials in parts by weight: 50-60 parts of modified starch, 50-85 parts of resin material, 20-30 parts of porous cellulose, 2-3 parts of antioxidant, 2-3 parts of cross-linking agent and 3-8 parts of plasticizer. The invention solves the problem that the existing optical film cannot be degraded, and the mobile phone glass optical film based on the starch biological material is provided by the invention, wherein starch is prepared into amylose, so that the performance of the starch is improved, holes are formed on the surface of the starch through enzymolysis of the amylose, the degradation speed is improved, nanoscale sodium alginate powder is mixed with the starch, the holes on the surface of the starch can be filled, and sodium alginate can be attached to the surface of the starch to form a net-shaped structure.
Description
Technical Field
The invention relates to the technical field of optical films, in particular to a mobile phone glass optical film based on starch biological materials.
Background
Optical films are composed of a thin, layered medium, a class of optical medium materials that propagate a light beam through an interface. Optical films have been widely used in the optical and optoelectronic arts for the manufacture of various optical instruments. The optical film comprises a high-reflection film, an anti-reflection film, a light filtering film, a color filtering film, an anti-reflection film, a light condensing film, a diffusion film, a polarizing film and the like, and with the wide application of a large-screen mobile phone, the yield of the mobile phone glass optical film is increased, and the existing mobile phone glass optical film is made of biological materials, is not degradable and is not beneficial to environmental protection.
The Chinese patent with publication number of CN113462250B discloses an antibacterial sanitary mobile phone film and a preparation method thereof, which is prepared by uniformly stirring antibacterial anti-fouling emulsion, a curing agent, a cosolvent, deionized water, a film-forming auxiliary agent, a leveling agent, a coupling agent and a defoaming agent, standing and filtering to obtain an antibacterial sanitary coating, spraying the antibacterial sanitary coating onto a rectangular glass sheet subjected to ultrasonic cleaning, drying to form an antibacterial sanitary coating, rubberizing, packaging after inspection is qualified, and obtaining the antibacterial sanitary mobile phone film.
Although the patent solves the problems that various bacteria are easy to breed on the mobile phone film in the background technology, so that the health condition of the mobile phone is worried, and the physical health of a user is affected to a certain extent, only the components involved in the patent cannot be degraded, and the environment protection is not facilitated.
Disclosure of Invention
The invention aims to provide a mobile phone glass optical film based on starch biological materials, which solves the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the mobile phone glass optical film based on the starch biological material comprises a base film layer and an antibacterial layer, wherein the base film layer is attached to the antibacterial layer, and comprises the following raw materials in parts by weight: 50-60 parts of modified starch, 50-85 parts of resin material, 20-30 parts of porous cellulose, 2-3 parts of antioxidant, 2-3 parts of cross-linking agent and 3-8 parts of plasticizer;
the antibacterial layer comprises the following raw materials in parts by weight: 20-30 parts of modified starch, 30-42 parts of resin material, 20-30 parts of chitin nanofiber, 3-8 parts of zinc oxide, 1-3 parts of antioxidant, 1-3 parts of cross-linking agent and 3-6 parts of plasticizer;
the processing method of the base film layer comprises the following steps: preparing modified starch and porous cellulose, uniformly mixing the modified starch, a resin material, the porous cellulose, an antioxidant, a cross-linking agent and a plasticizer, regulating the moisture content to prepare a base film coating, coating the base film coating on a processing plate, and performing hot press molding to obtain a base film layer.
Preferably, the modified starch material is prepared into amylose, the content of the amylose in the modified starch is not less than 80%, and the modified starch is obtained by modifying the amylose.
Preferably, the process for preparing amylose is as follows: mixing starch with distilled water to prepare starch suspension, adding alkali liquor, stirring and standing for a period of time, adding hydrochloric acid solution to neutralize the pH value, pasting the starch, adding pullulanase to cut and branch the starch solution, adding a certain amount of n-butanol to complex and precipitate amylose molecules, removing supernatant, filtering to obtain precipitate, washing with absolute ethyl alcohol, and drying to obtain amylose;
preferably, the process of modifying amylose to obtain modified starch is as follows: dissolving amylose, carrying out enzymolysis on the amylose, adding nanoscale sodium alginate powder, mixing with the amylose, drying the mixture to constant weight, and collecting the modified starch.
Preferably, the preparation method of the porous cellulose comprises the following steps: cellulose is dissolved in ionic liquid to form cellulose dissolution liquid, the dissolution liquid is dripped into a low-temperature medium to enable cellulose in the dissolution liquid to be separated out to form ionic liquid, dispersion liquid containing the ionic liquid is obtained, the ionic liquid in the ionic liquid is replaced by a replacement solvent to form replacement particles, and the replacement particles are freeze-dried to obtain the porous cellulose material.
Preferably, the resin material is one of polybutylene succinate, polylactic acid resin or polybutylene adipate/terephthalate.
Preferably, in the processing process of the base film layer, the moisture content of the base film coating is 6-9wt%, and the base film coating is formed by hot pressing at 100-130 ℃.
Preferably, the preparation method of the chitin nanofiber comprises the following steps:
purifying to obtain pure chitin powder, further pulverizing and grinding to obtain chitin nanofiber, wherein the further pulverizing and grinding methods comprise grinding method, ultrasonic method and high pressure homogenizing method.
Preferably, the processing method of the antibacterial layer is as follows:
weighing modified starch, a resin material, chitin nano-fibers, zinc oxide, an antioxidant, a cross-linking agent and a plasticizer according to the weight proportion, uniformly mixing, adjusting the mixture to the moisture content to prepare an antibacterial coating, coating the antibacterial coating on the surface of a base film layer, and drying to obtain the antibacterial layer.
Preferably, the water content of the antibacterial coating is 8-10wt%, the drying temperature after coating is 60-80 ℃, and the drying time is 5-8 minutes.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the starch is subjected to amylose preparation, so that the performance of the starch is improved, holes are formed on the surface of the starch through amylose enzymolysis, the degradation speed is improved, nanoscale sodium alginate powder is mixed with the starch, the holes on the surface of the starch can be filled, sodium alginate can be attached to the surface of the starch to form a reticular structure, and after porous cellulose is treated, the holes on the surface are increased, and after the porous cellulose is mixed with a resin material, the intersolubility is better, and the prepared optical film has high tensile strength and impact strength;
2. according to the invention, the chitin nanofiber material is used in the antibacterial layer and is matched with the zinc oxide material for bacteriostasis, the chitin nanofiber has good degradability, a certain antibacterial effect, health and environmental protection are achieved, and the zinc oxide enhances the hardness and wear resistance of the antibacterial layer, and has a certain antibacterial property.
Drawings
FIG. 1 is a schematic diagram of a structure of a mobile phone glass optical film according to the present invention;
in the figure: 1. a base film layer; 2. an antibacterial layer.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to solve the existing problems, referring to fig. 1, the present embodiment provides the following technical solutions:
the utility model provides a cell-phone glass optical film based on starch class biomaterial, includes basic membranous layer 1 and antibacterial layer 2, basic membranous layer 1 and antibacterial layer 2 laminating are connected, and wherein basic membranous layer 1 includes following raw materials by weight: 50-60 parts of modified starch, 50-85 parts of resin material, 20-30 parts of porous cellulose, 2-3 parts of antioxidant, 2-3 parts of cross-linking agent and 3-8 parts of plasticizer;
the antibacterial layer 2 comprises the following raw materials in parts by weight: 20-30 parts of modified starch, 30-42 parts of resin material, 20-30 parts of chitin nanofiber, 3-8 parts of zinc oxide, 1-3 parts of antioxidant, 1-3 parts of cross-linking agent and 3-6 parts of plasticizer;
the resin material is one of polybutylene succinate, polylactic acid resin or poly (adipic acid)/butylene terephthalate. All belong to degradable resin materials, and the environmental protection performance of the mobile phone glass optical film can be improved by adopting the resin materials.
The processing method of the base film layer 1 comprises the following steps: preparing modified starch and porous cellulose, uniformly mixing the modified starch, a resin material, the porous cellulose, an antioxidant, a cross-linking agent and a plasticizer, regulating the moisture content to prepare a base film coating, coating the base film coating on a processing plate, performing hot press molding to obtain a base film layer 1, wherein the moisture content of the base film coating is 6-9wt%, and performing hot press molding at 100-130 ℃.
Modified starch the prior starch material is used for preparing amylose, the content of the amylose in the modified starch is not less than 80%, and the modified starch is obtained by modifying the amylose;
the process for preparing amylose is as follows: mixing starch with distilled water to prepare starch suspension, adding alkali liquor, stirring and standing for a period of time, adding hydrochloric acid solution to neutralize the pH value, pasting the starch, adding pullulanase to cut and branch the starch solution, adding a certain amount of n-butanol to complex and precipitate amylose molecules, removing supernatant, filtering to obtain precipitate, washing with absolute ethyl alcohol, and drying to obtain amylose;
mixing starch with distilled water to obtain starch suspension, wherein the starch accounts for about 20% of the suspension by mass, adding sodium hydroxide solution with concentration of 0.5mol/L in an amount twice that of the suspension, slightly stirring, and standing at 25-28deg.C for 15 min to obtain starch solution;
neutralizing the starch solution with hydrochloric acid solution to make the starch mass account for 4% -6% of the total mass of the starch solution and the hydrochloric acid solution, gelatinizing in 75 ℃ water bath for 60 min, adjusting pH to 4-5, adjusting temperature to 55-65 ℃, adding proper amount of pullulanase, cutting for 10-20 min, heating to above 85 ℃, inactivating enzyme for 10-20 min, wherein the pullulanase dosage is 12.5-100U/g starch;
the temperature of the treated starch solution is reduced to 50-70 ℃, a certain amount of n-butanol is added to complex and precipitate amylose molecules, the n-butanol dosage is 40-70ml/L starch solution, after stirring for 30 minutes, the temperature is reduced to 40 ℃, the stirring is slowly carried out for 20-24 hours, the supernatant is removed, the precipitate is obtained by suction filtration, the precipitate is washed 3 times by absolute ethyl alcohol, and the precipitate is dried in a blast oven at 50-70 ℃, thus obtaining the high-purity amylose.
The process of modifying amylose to obtain modified starch is as follows: dissolving amylose, carrying out enzymolysis on the amylose, adding nanoscale sodium alginate powder, mixing with the amylose, drying the mixture to constant weight, and collecting the modified starch.
Adding distilled water with volume 3-5 times of that of amylose into the distilled water, shaking to dissolve the amylose, adding isoamylase into the distilled water, mixing the mixture, heating the mixture to 40 ℃, keeping the temperature unchanged, stirring the mixture for 10 minutes, adding nanoscale sodium alginate powder into the mixture, stirring the mixture for 30-40 minutes, centrifugally separating the mixture, collecting the precipitate for the next time, and drying the precipitate to constant weight, thus obtaining the modified starch.
The preparation method of the porous cellulose comprises the following steps: cellulose is dissolved in ionic liquid to form cellulose dissolution liquid, the dissolution liquid is dripped into a low-temperature medium to enable cellulose in the dissolution liquid to be separated out to form ionic liquid, dispersion liquid containing the ionic liquid is obtained, the ionic liquid in the ionic liquid is replaced by a replacement solvent to form replacement particles, and the replacement particles are freeze-dried to obtain the porous cellulose material.
Cellulose is dissolved in 1-butyl-3-methylimidazole chloride ionic liquid to form cellulose dissolution liquid, the treatment temperature is 140 ℃, the stirring speed is 100r/min, the dissolution liquid is dripped into ice water to enable cellulose in the dissolution liquid to be separated out to form ionic liquid, and the ionic liquid is obtained; and (3) replacing the ionic liquid in the ionic liquid by distilled water or deionized water to form replacement particles, and freeze-drying the replacement particles, wherein the treatment temperature is-10 to-20 ℃ and the treatment time is 12 to 24 hours in the freeze-drying process, so as to obtain the porous cellulose material.
The preparation method of the chitin nanofiber comprises the following steps:
purifying to obtain pure chitin powder, further crushing and grinding to obtain chitin nanofiber, and further crushing and grinding the pure chitin powder by a grinding method, an ultrasonic method and a high-pressure homogenizing method sequentially to crush and open the pure chitin powder, thereby separating to obtain the chitin nanofiber with nanoscale, high length-diameter ratio and high specific surface area.
Grinding: standard grinding the prepared 0.5. 0.5wt% aqueous solution of chitin for 5 times on a grinder with the rotating speed of 1800rpm, wherein the aqueous solution of chitin is called as chitin standard grinding liquid; the standard chitin grinding liquid is ground for 15 times by using a grinder at the rotating speed of 1500rpm, and the temperature of the solution is always controlled at 25 ℃ to obtain 0.5wt% of ground chitin suspension.
And (3) ultrasonic treatment: and preparing 0.5 weight percent of the prepared solution into 0.1 weight percent of deionized water, and then performing ultrasonic grinding in an ice water bath for 1h by using an ultrasonic cell grinder to finally obtain ultrasonic chitin suspension, wherein the ultrasonic power is set to be 1000W.
High-pressure homogenization treatment: grinding the prepared 0.5wt% chitin aqueous solution for more than 3 times under the condition that the rotating speed of a grinder is 1800rpm, preparing deionized water into 0.1wt% of mass concentration, then using a high-pressure homogenizer to carry out further mechanical high-pressure crushing on the obtained chitin standard grinding liquid, setting the pressure of the high-pressure homogenizer to 2200pa, homogenizing for 20 times, and finally obtaining 0.1wt% homogenized chitin suspension;
centrifuging the 0.1wt% homogeneous chitin suspension to remove liquid, and oven drying the obtained chitin to constant weight to obtain chitin nanofiber.
The processing method of the antibacterial layer 2 comprises the following steps:
weighing modified starch, resin material, chitin nanofiber, zinc oxide, antioxidant, cross-linking agent and plasticizer according to the weight ratio, uniformly mixing, regulating the mixture to the moisture content, preparing the antibacterial coating, coating the antibacterial coating on the surface of the base film layer 1, and drying to obtain the antibacterial coating with the water content of 8-10wt% of the antibacterial layer 2, wherein the drying temperature after coating is 60-80 ℃, and the drying time is 5-8 minutes.
Embodiment one: the base film layer 1 comprises the following raw materials in parts by weight: 56 parts of modified starch, 62 parts of resin material, 22 parts of porous cellulose, 2 parts of antioxidant, 2 parts of cross-linking agent and 4 parts of plasticizer;
the antibacterial layer 2 comprises the following raw materials in parts by weight: 23 parts of modified starch, 31 parts of resin material, 23 parts of chitin nanofiber, 3 parts of zinc oxide, 1 part of antioxidant, 1 part of cross-linking agent and 3 parts of plasticizer;
the resin material is poly butylene succinate;
the antioxidant is water-based environment-friendly antioxidant KY616-5;
the cross-linking agent is selected from IBMA environment-friendly cross-linking agent monomers;
the optical film was prepared using the following method:
preparing a base film layer 1: uniformly mixing modified starch, a resin material, porous cellulose, an antioxidant, a cross-linking agent and a plasticizer, regulating the water content to 6wt%, preparing a base film coating, coating the base film coating on a processing plate, and performing hot press molding at 110 ℃ to obtain a base film layer 1;
preparing an antibacterial layer 2: weighing modified starch, resin material, chitin nanofiber, zinc oxide, antioxidant, cross-linking agent and plasticizer according to the weight ratio, uniformly mixing, regulating the water content to 8wt%, preparing the antibacterial coating, coating the antibacterial coating on the surface of the base film layer 1, and drying at 68 ℃ for 7 minutes.
Embodiment two: the base film layer 1 comprises the following raw materials in parts by weight: 58 parts of modified starch, 62 parts of resin material, 20 parts of porous cellulose, 2 parts of antioxidant, 2 parts of cross-linking agent and 4 parts of plasticizer;
the antibacterial layer 2 comprises the following raw materials in parts by weight: 23 parts of modified starch, 31 parts of resin material, 23 parts of chitin nanofiber, 3 parts of zinc oxide, 1 part of antioxidant, 1 part of cross-linking agent and 3 parts of plasticizer;
the resin material is poly butylene succinate;
the antioxidant is water-based environment-friendly antioxidant KY616-5;
the cross-linking agent is selected from IBMA environment-friendly cross-linking agent monomers;
an optical film was produced in the same manner as in example one.
Embodiment III: the base film layer 1 comprises the following raw materials in parts by weight: 58 parts of modified starch, 62 parts of resin material, 20 parts of porous cellulose, 2 parts of antioxidant, 2 parts of cross-linking agent and 4 parts of plasticizer;
the antibacterial layer 2 comprises the following raw materials in parts by weight: 23 parts of modified starch, 31 parts of resin material, 22 parts of chitin nanofiber, 6 parts of zinc oxide, 1 part of antioxidant, 1 part of cross-linking agent and 3 parts of plasticizer;
the resin material is poly butylene succinate;
the antioxidant is water-based environment-friendly antioxidant KY616-5;
the cross-linking agent is selected from IBMA environment-friendly cross-linking agent monomers;
an optical film was produced in the same manner as in example one.
Embodiment four: the base film layer 1 comprises the following raw materials in parts by weight: 58 parts of modified starch, 62 parts of resin material, 20 parts of porous cellulose, 2 parts of antioxidant, 2 parts of cross-linking agent and 4 parts of plasticizer;
the antibacterial layer 2 comprises the following raw materials in parts by weight: 23 parts of modified starch, 31 parts of resin material, 26 parts of chitin nanofiber, 3 parts of zinc oxide, 1 part of antioxidant, 1 part of cross-linking agent and 3 parts of plasticizer;
the resin material is poly butylene succinate;
the antioxidant is water-based environment-friendly antioxidant KY616-5;
the cross-linking agent is selected from IBMA environment-friendly cross-linking agent monomers;
an optical film was produced in the same manner as in example one.
Comparative example one: the base film layer 1 comprises the following raw materials in parts by weight: 58 parts of starch, 62 parts of resin material, 20 parts of porous cellulose, 2 parts of antioxidant, 2 parts of cross-linking agent and 4 parts of plasticizer;
the antibacterial layer 2 comprises the following raw materials in parts by weight: 23 parts of starch, 31 parts of resin material, 26 parts of chitin nanofiber, 3 parts of zinc oxide, 1 part of antioxidant, 1 part of cross-linking agent and 3 parts of plasticizer;
the resin material is poly butylene succinate;
the antioxidant is water-based environment-friendly antioxidant KY616-5;
the cross-linking agent is selected from IBMA environment-friendly cross-linking agent monomers;
an optical film was produced in the same manner as in example one.
Comparative example two: the base film layer 1 comprises the following raw materials in parts by weight: 58 parts of modified starch, 62 parts of resin material, 2 parts of antioxidant, 2 parts of cross-linking agent and 4 parts of plasticizer;
the antibacterial layer 2 comprises the following raw materials in parts by weight: 23 parts of modified starch, 31 parts of resin material, 26 parts of chitin nanofiber, 3 parts of zinc oxide, 1 part of antioxidant, 1 part of cross-linking agent and 3 parts of plasticizer;
the resin material is poly butylene succinate;
the antioxidant is water-based environment-friendly antioxidant KY616-5;
the cross-linking agent is selected from IBMA environment-friendly cross-linking agent monomers;
an optical film was produced in the same manner as in example one.
Comparative example three: the base film layer 1 comprises the following raw materials in parts by weight: 58 parts of modified starch, 62 parts of resin material, 20 parts of porous cellulose, 2 parts of antioxidant, 2 parts of cross-linking agent and 4 parts of plasticizer;
the antibacterial layer 2 comprises the following raw materials in parts by weight: 23 parts of modified starch, 31 parts of resin material, 3 parts of zinc oxide, 1 part of antioxidant, 1 part of cross-linking agent and 3 parts of plasticizer;
the resin material is poly butylene succinate;
the antioxidant is water-based environment-friendly antioxidant KY616-5;
the cross-linking agent is selected from IBMA environment-friendly cross-linking agent monomers;
an optical film was produced in the same manner as in example one.
The optical films prepared in the above examples and comparative examples were tested to obtain the following data:
| tensile Strength (MPa) | Impact Strength (KJ.m) 2 ） | 90-day biodegradation rate (%) | Antibacterial activity (%) | |
| Example 1 | 13 | 29.32 | 95 | 92.9 |
| Example two | 14 | 29.31 | 96 | 92.8 |
| Example III | 14 | 29.95 | 96 | 92.9 |
| Example IV | 14 | 29.11 | 96 | 92.9 |
| Comparative example one | 9 | 22.3 | 89 | 89.7 |
| Comparative example two | 9 | 23.5 | 95 | 89.8 |
| Comparative example three | 13 | 28.9 | 95 | 63.2 |
It can be seen from the upper surface that the differences of the tensile strength, impact strength, 90-day biodegradation rate and antibacterial property are not large in the first to fourth examples, but the tensile strength, impact strength and 90-day biodegradation rate of the common starch used in the first comparative example are all lower, the tensile strength and tensile strength of the optical film prepared by removing the porous cellulose in the second comparative example are relatively lower, and the chitin nanofiber is not used in the third comparative example, so that the antibacterial effect is obviously poor, and the tensile strength, impact strength and biodegradation rate of the modified starch and the porous cellulose on the optical film are all positive, and the chitin nanofiber plays a positive role in antibacterial effect.
To sum up: according to the mobile phone glass optical film based on the starch biological material, the starch is subjected to amylose preparation, so that the performance of the starch is improved, holes are formed in the surface of the starch through amylose enzymolysis, the degradation speed is improved, nanoscale sodium alginate powder is mixed with the starch to fill the holes in the surface of the starch, the sodium alginate can adhere to the surface of the starch to form a reticular structure, and after porous cellulose is treated, the holes in the surface are increased, and after the porous cellulose is mixed with a resin material, the compatibility is better, and the prepared optical film is high in tensile strength and impact strength; in the antibacterial layer 2, the chitin nanofiber material is used to perform bacteriostasis in combination with the zinc oxide material, the chitin nanofiber has good degradability, a certain bacteriostasis effect, health and environmental protection are achieved, and the zinc oxide enhances the hardness and wear resistance of the antibacterial layer 2, and has a certain bacteriostasis.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a cell-phone glass optical film based on starch class biomaterial, includes basic membranous layer (1) and antibacterial layer (2), its characterized in that: the base film layer (1) is connected with the antibacterial layer (2) in a laminating way, wherein the base film layer (1) comprises the following raw materials in parts by weight: 50-60 parts of modified starch, 50-85 parts of resin material, 20-30 parts of porous cellulose, 2-3 parts of antioxidant, 2-3 parts of cross-linking agent and 3-8 parts of plasticizer;
the antibacterial layer (2) comprises the following raw materials in parts by weight: 20-30 parts of modified starch, 30-42 parts of resin material, 20-30 parts of chitin nanofiber, 3-8 parts of zinc oxide, 1-3 parts of antioxidant, 1-3 parts of cross-linking agent and 3-6 parts of plasticizer;
the processing method of the base film layer (1) comprises the following steps: preparing modified starch and porous cellulose, uniformly mixing the modified starch, a resin material, the porous cellulose, an antioxidant, a cross-linking agent and a plasticizer, regulating the moisture content to prepare a base film coating, coating the base film coating on a processing plate, and performing hot press molding to obtain the base film layer (1).
2. The starch-based biomaterial-based optical film for a mobile phone glass according to claim 1, wherein: the modified starch is prepared from the prior starch material, the content of the amylose in the modified starch is not less than 80 percent, and the modified starch is obtained by modifying the amylose.
3. The starch-based biomaterial-based optical film for a mobile phone glass according to claim 2, wherein: the process for preparing amylose is as follows: mixing starch with distilled water to prepare starch suspension, adding alkali liquor, stirring and standing for a period of time, adding hydrochloric acid solution to neutralize the pH value, gelatinizing the starch, adding pullulanase to cut and branch the starch solution, adding a certain amount of n-butanol to complex and precipitate amylose molecules, removing supernatant, filtering to obtain precipitate, washing with absolute ethyl alcohol, and drying to obtain amylose.
4. A starch based biomaterial based optical film for a cell phone glass as claimed in claim 3, wherein: the process for modifying the amylose to obtain the modified starch comprises the following steps: dissolving amylose, carrying out enzymolysis on the amylose, adding nanoscale sodium alginate powder, mixing with the amylose, drying the mixture to constant weight, and collecting the modified starch.
5. The starch-based biomaterial-based optical film for a mobile phone glass according to claim 4, wherein: the preparation method of the porous cellulose comprises the following steps: cellulose is dissolved in ionic liquid to form cellulose dissolution liquid, the dissolution liquid is dripped into a low-temperature medium to enable cellulose in the dissolution liquid to be separated out to form ionic liquid, dispersion liquid containing the ionic liquid is obtained, the ionic liquid in the ionic liquid is replaced by a replacement solvent to form replacement particles, and the replacement particles are freeze-dried to obtain the porous cellulose material.
6. The starch-based biomaterial-based optical film for a mobile phone glass according to claim 5, wherein: the resin material is one of polybutylene succinate, polylactic acid resin or polybutylene adipate/terephthalate.
7. The starch-based biomaterial-based optical film for a cellular phone glass according to claim 6, wherein: in the processing process of the base film layer (1), the moisture content of the base film coating is 6-9wt%, and the base film coating is formed by hot pressing at 100-130 ℃.
8. The starch-based biomaterial-based optical film for a cellular phone glass according to claim 7, wherein: the preparation method of the chitin nanofiber comprises the following steps:
purifying to obtain pure chitin powder, further pulverizing and grinding to obtain chitin nanofiber, wherein the further pulverizing and grinding methods comprise grinding method, ultrasonic method and high pressure homogenizing method.
9. The starch-based biomaterial-based optical film for a cellular phone glass according to claim 8, wherein: the processing method of the antibacterial layer (2) comprises the following steps:
weighing modified starch, a resin material, chitin nano-fibers, zinc oxide, an antioxidant, a cross-linking agent and a plasticizer according to the weight ratio, uniformly mixing, taking the zinc oxide as nano-particles, adjusting the water content to prepare an antibacterial coating, coating the antibacterial coating on the surface of a base film layer (1), and drying to obtain an antibacterial layer (2).
10. The starch-based biomaterial-based optical film for a cellular phone glass according to claim 9, wherein: the water content of the antibacterial coating is 8-10wt%, the drying temperature after coating is 60-80 ℃, and the drying time is 5-8 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310861280.4A CN116574292A (en) | 2023-07-14 | 2023-07-14 | Mobile phone glass optical film based on starch biological material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310861280.4A CN116574292A (en) | 2023-07-14 | 2023-07-14 | Mobile phone glass optical film based on starch biological material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116574292A true CN116574292A (en) | 2023-08-11 |
Family
ID=87540042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310861280.4A Pending CN116574292A (en) | 2023-07-14 | 2023-07-14 | Mobile phone glass optical film based on starch biological material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116574292A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104558663A (en) * | 2014-12-31 | 2015-04-29 | 北京林业大学 | Thin film with good antibacterial property and degradability and preparation method thereof |
| CN104926949A (en) * | 2015-07-10 | 2015-09-23 | 华东理工大学 | Preparation method for high purity amylose |
| CN114106541A (en) * | 2022-01-28 | 2022-03-01 | 北京禾易和科技有限公司 | Environment-friendly food packaging material, preparation method and application |
| CN114213700A (en) * | 2021-12-14 | 2022-03-22 | 国家电投集团科学技术研究院有限公司 | Cellulose porous material and preparation method thereof |
| CN116285266A (en) * | 2023-03-27 | 2023-06-23 | 雄安创新研究院 | Biological full-degradation antibacterial mobile phone protective film and preparation method thereof |
-
2023
- 2023-07-14 CN CN202310861280.4A patent/CN116574292A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104558663A (en) * | 2014-12-31 | 2015-04-29 | 北京林业大学 | Thin film with good antibacterial property and degradability and preparation method thereof |
| CN104926949A (en) * | 2015-07-10 | 2015-09-23 | 华东理工大学 | Preparation method for high purity amylose |
| CN114213700A (en) * | 2021-12-14 | 2022-03-22 | 国家电投集团科学技术研究院有限公司 | Cellulose porous material and preparation method thereof |
| CN114106541A (en) * | 2022-01-28 | 2022-03-01 | 北京禾易和科技有限公司 | Environment-friendly food packaging material, preparation method and application |
| CN116285266A (en) * | 2023-03-27 | 2023-06-23 | 雄安创新研究院 | Biological full-degradation antibacterial mobile phone protective film and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 汪多仁: "《绿色降解化学品》", vol. 1, 科学技术文献出版社, pages: 119 - 121 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Dutta et al. | Functional cellulose-based hydrogels as extracellular matrices for tissue engineering | |
| CN106478963B (en) | Flaxseed gum/cellulose composite hydrogel and preparation method thereof | |
| CN112853623B (en) | Preparation method of electrostatic spinning kaolinite reinforced natural polysaccharide porous fiber membrane | |
| Liao et al. | Temperature/pH dual sensitive Hericium erinaceus residue carboxymethyl chitin/poly (N-isopropyl acrylamide) sequential IPN hydrogels | |
| Liu et al. | Effect of eggshell membrane as porogen on the physicochemical structure and protease immobilization of chitosan-based macroparticles | |
| CN111001314A (en) | Preparation method and application of nanocrystalline cellulose/dopamine composite membrane | |
| CN110698731A (en) | Multifunctional composite biological material, preparation method and application thereof | |
| CN107519540B (en) | High-strength flexible light-transmitting implantable fibroin/bacterial cellulose/graphene composite conductive film | |
| Liu et al. | Enzymatic degradation of nanosized chitin whiskers with different degrees of deacetylation | |
| Chen et al. | Preparation and research of PCL/cellulose composites: Cellulose derived from agricultural wastes | |
| CN113136053A (en) | Preparation method of lignocellulose three-component double-crosslinking gel, gel and application | |
| Ahuja | Fluconazole-loaded TEOS-modified nanocellulose 3D scaffolds–Fabrication, characterization and its application as vaginal drug delivery system | |
| CN106727280B (en) | A kind of nano biological matter base anticancer sustained-release gel and preparation method thereof | |
| CN1297957A (en) | Preparation and use of intermingled film or fiber of carboxymethyl chitosan and alginic acid | |
| Johari et al. | Comparison study ofhydrogels properties synthesized with micro-andnano-size bacterial cellulose particles extracted from nata de coco | |
| CN113337084B (en) | Biodegradable film material capable of efficiently shielding ultraviolet and preparation method thereof | |
| CN116574292A (en) | Mobile phone glass optical film based on starch biological material | |
| CN115710362B (en) | Preparation method and application of sodium hyaluronate gel | |
| Enoch et al. | Tuning the rheological properties of chitosan/alginate hydrogels for tissue engineering application | |
| Kobayashi | Cellulose hydrogels; fabrication, properties, and their application to biocompatible and tissue engineering | |
| CN116217969A (en) | Bacterial cellulose composite hydrogel and preparation method thereof | |
| Liu et al. | Study on properties and aggregation structures of deacetylated konjac glucomannan/chitosan hydrochloride absorbent blend gel films | |
| CN112280106A (en) | Antibacterial high-strength fully-degradable starch-based film | |
| Çakıcı | Preparation and characterization of biocompatible membranes based on TiO2 nanoparticul | |
| Zhao et al. | Preparation and optimization of calcium pectate beads for cell encapsulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20230811 |
|
| RJ01 | Rejection of invention patent application after publication |