CN101220176A - Blended degradable membrane of chitosan/xylogen and method for producing the same - Google Patents
Blended degradable membrane of chitosan/xylogen and method for producing the same Download PDFInfo
- Publication number
- CN101220176A CN101220176A CNA2007100502915A CN200710050291A CN101220176A CN 101220176 A CN101220176 A CN 101220176A CN A2007100502915 A CNA2007100502915 A CN A2007100502915A CN 200710050291 A CN200710050291 A CN 200710050291A CN 101220176 A CN101220176 A CN 101220176A
- Authority
- CN
- China
- Prior art keywords
- chitosan
- xylogen
- lignin
- concentration
- hours
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a chitosan/lignin blending degradable membrane which contains 5-30 percent of lignin that does not go through chemical treatment according to weight percentage. The lignin has primary structure, thickness of 0.05-0.2mm, tensile strength of 42.0-67.3MPa, elongation at break of 15.3-47.6 percent, glass-transition temperature Tg of 155-159 DEG C and storage modulus of 3462-4133MPa. According to an IR spectrogram, a stretching vibration peak is found at 3420cm<-1> after a hydrogen bond is formed by O-H of the lignin and the chitosan and a stretching vibration peak is found at 1082cm<-1> after a hydrogen bond is formed by C-O of the lignin and the chitosan. The invention further discloses a preparation method thereof. The blending membrane provided by the invention can not only keep good biodegradability but also has good mechanical property and thermo stability and can also reduce cost relatively greatly, replace the current non-biodegradable materials and be widely applied in industries of medicine, cosmetic, paper making, waste water treatment and so on.
Description
Technical field
The invention belongs to chitosan blend modified membrane product and preparing technical field thereof, specifically, the present invention relates to a kind of chitosan mixed film that contains better mechanical property of having of biodegradable xylogen and thermostability and preparation method thereof.
Background technology
Chitosan is as a kind of natural biological macromolecular material, because it has biological degradability, biocompatibility, good mechanical property, wetting ability, ionic adsorption and chemical stability and good film forming ability can be widely used in medicine, makeup, papermaking, industries such as wastewater treatment, but, be mainly used in pharmaceutical industries at present because its cost is higher.And will be with it as a kind of general Biodegradable material, as wrapping material, disposable plastic bag, to replace present not biodegradable material, its mechanical property and thermostability are still waiting further raising.In addition, because chitosan wide material sources, be not raw materials for production with the oil, get a good chance of replacing traditional nondegradable be the plastics of raw material with the oil, therefore, under the prerequisite that does not influence its biological degradability, improve chitosan mechanical property, thermostability, reduce its cost so that its practical application can be more extensive, be the direction that the scientific worker makes great efforts to study always.
The method that improves at present the performance of chitosan roughly is divided three classes: a class is and traditional nonbiodegradable polymer blending, as with nylon 1010 blend (Yu Jiahui, Du Yumin, polymer material science and engineering, 17 (5) 116～120,2001).When nylon 1010 content was 20%, its tensile strength was 61MPa, and 63.8MPa decreases than pure sample, and heat decomposition temperature is 535.69 ℃, change not quite for 534.87 ℃ than pure sample, but the biodegradability of material was lower than pure chitosan after the blend.One class is and degradable macromolecular material blend, as with polyvinyl alcohol blending (Yu Ruobing, trip Hua Yan, modern plastics processed and applied, 13 (2) 16～18,2000).When polyvinyl alcohol content was 20%, tensile strength was 52.2MPa, also decreased than the 53.8MPa of pure chitosan.One class is and the blend of degradable biological material, as with starch blending (Nie Liuhui, Han Yongsheng, Packaging Engineering, 2005/06).When the ratio of chitosan solution and starch solution was 3: 2, tensile strength had improved 44.5% than chitosan film.
Xylogen is the byproduct of paper industry, and annual worldwide production is about 5,000 ten thousand tons, and its molecular structure is made up of following three kinds of basic structures, and molecular weight is about 5000～100000:
It is usually as fuel or directly discharging, not only comprehensive utilization benefit is low for this, and environment polluted, in order to improve its comprehensive utilization benefit, also avoid environment is polluted simultaneously, many scientific workers are devoted to widen its purposes, as as polypropylene or poly filler, to reduce polypropylene or polyethylene cost (A.Y.KHARADE, D.D.KALE.Journal of Applied Polymer Science, 1999 Vol.72,1321-1326).And for example, Riccardo A.A.Muzzarelli people such as (Pierluca liari.Carbohydrate Polymers 23 (1994) 155-160) research has also been reported xylogen has been decomposed the veratrum aldehyde that obtains, syringaldehyde, the Vanillin linking agent as chitosan through technical chemistry, making thickness is 25～30 μ m chitosan films, and its tensile strength is 42kg.
But with xylogen directly and chitosan blend prepare blended degradable membrane and do not appear in the newspapers.
Summary of the invention
The objective of the invention is provides a kind of biodegradable and cheap xylogen/chitosan blend degradable membrane at existing technology existing problems, and this film has better mechanical property and thermostability than pure chistosan film.
Another object of the present invention provides the method for preparation above-mentioned chitosan/xylogen blended degradable membrane.
Chitosan provided by the invention/xylogen blended degradable membrane, it is characterized in that this film contains by weight percentage without chemical treatment, xylogen 5～30% with primary formation, its thickness is 0.05～0.2mm, tensile strength is 42.0～67.3MPa, elongation at break is 15.3～47.6%, glass transition temperature Tg is 155～159 ℃, and storage modulus is 3462～4133MPa, and its infrared spectrum is presented at 3420cm
-1Stretching vibration peak after the O-H of xylogen and chitosan forms hydrogen bond is arranged, 1082cm
-1Stretching vibration peak after the C-0 of xylogen and chitosan forms hydrogen bond is arranged.
The method for preparing the described chitosan of claim 1/xylogen blended degradable membrane provided by the invention, the processing step and the condition of this method are as follows:
1. dissolve chitosan and will be by weight percentage 70～90% chitosan and join in the aqueous acetic acid, stir 1～2 hour down to dissolving fully at 20～50 ℃, stand-by;
2. dissolved lignin will be that 10～30% xylogen joins in the aqueous organopolysiloxane by weight percentage, stir 1～2 hour down to dissolving fully at 20～50 ℃, remove by filter insolubles;
3. solution blending will dissolve good xylogen and slowly be added drop-wise in the chitosan solution, 20～50 ℃ of following blended under agitation 3～5 hours;
4. film forming is poured the chitosan/lignin liquor that mixes in the mould into, removes bubble, then 40～60 ℃ dry 8～10 hours down, be that 1% sodium hydroxide solution soaks deacidification to neutral with concentration again, washing is dried and is promptly got chitosan/xylogen blend film.
The concentration of used aqueous acetic acid is 1% in the aforesaid method, and the concentration of used aqueous organopolysiloxane is 80%.
In the aforesaid method in the employed aqueous organopolysiloxane of dissolved lignin organic solvent be acetic acid, acetone, ethanol, any in the tetrahydrofuran (THF).
The present invention has following advantage:
1. because blend film provided by the present invention is to be matrix with the biodegradable chitosan, what add is the byproduct that has biodegradable paper industry equally---xylogen, thereby both can make the blend film that obtains can keep good biodegradable, can reduce cost by a relatively large margin again.
2. because xylogen used herein has the specific molecule structure, and have lightly crosslinked, and contain phenyl ring, phenolic hydroxyl group and more carbon oxygen singly-bound, can with the hydroxyl in the chitosan molecule, amido forms hydrogen bond, do not pass through any complex chemical treatment again and direct and chitosan solution blend, thereby can not destroy the lignin molecule structure on the one hand, enable to produce with chitosan better to interact, obtain mechanical property and thermostability all than the better blend film of pure chitosan, also because of having reduced the treatment process of xylogen, it is lower to make it preparation cost on the other hand.
3. can use relatively large xylogen owing to blend film provided by the present invention, this has not only widened the purposes of xylogen, the environmental pollution of having avoided direct discharging to cause, and also the added value of using for the raising xylogen has found a new approach.
4. because chitosan provided by the invention/xylogen blended degradable membrane not only has favorable biological degradability, but also have good mechanical performance, thermostability, low cost of manufacture in addition, thereby can be widely used in medicine, makeup, papermaking, industries such as wastewater treatment, especially can make it as a kind of general Biodegradable material,, become possibility to replace present not biodegradable material as wrapping material, disposable plastic bag.
5. the inventive method technical maturity is simple to operate, is easy to control, thereby can makes chitosan provided by the present invention/xylogen blend film can become a kind of economy and easy industrialized product.
Description of drawings
Fig. 1 is the infrared spectrum of Vinsol used in the present invention, pure chitosan and chitosan/xylogen (20%) blend film; Fig. 2 is 20% stereoscan photograph for content of lignin in chitosan of the present invention/xylogen blend film.
Embodiment
Also the invention will be further described to provide embodiment below.Be necessary to be pointed out that at this following examples can not be interpreted as limiting the scope of the invention; if the person skilled in the art in this field makes some nonessential improvement and adjustment according to the invention described above content to the present invention, still belong to protection domain of the present invention.
Embodiment 1
It is in 1% aqueous acetic acid that the chitosan of 90g is joined 4500ml concentration, 50 ℃ stir down 2 hours stand-by; It is in 80% aqueous acetone solution that the xylogen of 10g is joined 1000ml concentration, stirs 1 hour down at 20 ℃, removes by filter insolubles; The lignin liquor that dissolving is good slowly was added drop-wise in the chitosan solution, 30 ℃ of following blended under agitation 3 hours; Chitosan/the lignin liquor that mixes is poured in the mould, is removed bubble, then 40 ℃ dry 10 hours down, be that 1% sodium hydroxide solution soaks deacidification to neutral with concentration again, the water flushing is dried and is promptly got chitosan/xylogen blend film.
Embodiment 2
It is in 1% aqueous acetic acid that the chitosan of 70g is joined 3500ml concentration, 20 ℃ stir down 1 hour stand-by; It is in 80% aqueous acetone solution that the xylogen of 30g is joined 3000ml concentration, stirs 2 hours down at 25 ℃, removes by filter insolubles; The lignin liquor that dissolving is good slowly was added drop-wise in the chitosan solution, 20 ℃ of following blended under agitation 5 hours; Chitosan/the lignin liquor that mixes is poured in the mould, is removed bubble, then 40 ℃ dry 8 hours down, be that 1% sodium hydroxide solution soaks deacidification to neutral with concentration again, the water flushing is dried and is promptly got chitosan/xylogen blend film.
Embodiment 3
It is in 1% aqueous acetic acid that the chitosan of 75g is joined 3750ml concentration, 30 ℃ stir down 1 hour stand-by; It is in 80% aqueous acetone solution that the xylogen of 25g is joined 2500ml concentration, stirs 2 hours down at 25 ℃, removes by filter insolubles; The lignin liquor that dissolving is good slowly was added drop-wise in the chitosan solution, 25 ℃ of following blended under agitation 5 hours; Chitosan/the lignin liquor that mixes is poured in the mould, is removed bubble, then 40 ℃ dry 8 hours down, be that 1% sodium hydroxide solution soaks deacidification to neutral with concentration again, the water flushing is dried and is promptly got chitosan/xylogen blend film.
Embodiment 4
It is in 1% aqueous acetic acid that the chitosan of 85g is joined 4250ml concentration, 40 ℃ stir down 2 hours stand-by; It is in 80% aqueous acetone solution that the xylogen of 15g is joined 1500ml concentration, stirs 1 hour down at 20 ℃, removes by filter insolubles; The lignin liquor that dissolving is good slowly was added drop-wise in the chitosan solution, 30 ℃ of following blended under agitation 3 hours; Chitosan/the lignin liquor that mixes is poured in the mould, is removed bubble, then 40 ℃ dry 8 hours down, be that 1% sodium hydroxide solution soaks deacidification to neutral with concentration again, the water flushing is dried and is promptly got chitosan/xylogen blend film.
Embodiment 5
It is in 1% aqueous acetic acid that the chitosan of 80g is joined 4000ml concentration, 30 ℃ stir down 2 hours stand-by; It is in 80% aqueous acetone solution that the xylogen of 20g is joined 2000ml concentration, stirs 2 hours down at 25 ℃, removes by filter insolubles; The lignin liquor that dissolving is good slowly was added drop-wise in the chitosan solution, 25 ℃ of following blended under agitation 4 hours; Chitosan/the lignin liquor that mixes is poured in the mould, is removed bubble, then 40 ℃ dry 9 hours down, be that 1% sodium hydroxide solution soaks deacidification to neutral with concentration again, the water flushing is dried and is promptly got chitosan/xylogen blend film.
Embodiment 6
It is in 1% aqueous acetic acid that the chitosan of 80g is joined 4000ml concentration, 50 ℃ stir down 1.5 hours stand-by; It is in 80% aqueous ethanolic solution that the xylogen of 20g is joined 2000ml concentration, stirs 2 hours down at 30 ℃, removes by filter insolubles; The lignin liquor that dissolving is good slowly was added drop-wise in the chitosan solution, 25 ℃ of following blended under agitation 5 hours; Chitosan/the lignin liquor that mixes is poured in the mould, is removed bubble, then 50 ℃ dry 8 hours down, be that 1% sodium hydroxide solution soaks deacidification to neutral with concentration again, the water flushing is dried and is promptly got chitosan/xylogen blend film.
Embodiment 7
It is in 1% aqueous acetic acid that the chitosan of 90g is joined 4500ml concentration, 50 ℃ stir down 2 hours stand-by; It is in 80% aqueous acetic acid that the xylogen of 10g is joined 1000ml concentration, stirs 1 hour down at 30 ℃, removes by filter insolubles; The lignin liquor that dissolving is good slowly was added drop-wise in the chitosan solution, 40 ℃ of following blended under agitation 3 hours; Chitosan/the lignin liquor that mixes is poured in the mould, is removed bubble, then 60 ℃ dry 8 hours down, be that 1% sodium hydroxide solution soaks deacidification to neutral with concentration again, the water flushing is dried and is promptly got chitosan/xylogen blend film.
Embodiment 8
It is in 1% aqueous acetic acid that the chitosan of 75g is joined 3750ml concentration, 50 ℃ stir down 1.5 hours stand-by; It is in 80% aqueous acetic acid that the xylogen of 25g is joined 2500ml concentration, stirs 2 hours down at 50 ℃, removes by filter insolubles; The lignin liquor that dissolving is good slowly was added drop-wise in the chitosan solution, 40 ℃ of following blended under agitation 5 hours; Chitosan/the lignin liquor that mixes is poured in the mould, is removed bubble, then 60 ℃ dry 10 hours down, be that 1% sodium hydroxide solution soaks deacidification to neutral with concentration again, the water flushing is dried and is promptly got chitosan/xylogen blend film.
Embodiment 9
It is in 1% aqueous acetic acid that the chitosan of 80g is joined 4000ml concentration, 50 ℃ stir down 1.5 hours stand-by; It is in 80% tetrahydrofuran aqueous solution that the xylogen of 20g is joined 2000ml concentration, stirs 2 hours down at 25 ℃, removes by filter insolubles; The lignin liquor that dissolving is good slowly was added drop-wise in the chitosan solution, 25 ℃ of following blended under agitation 5 hours; Chitosan/the lignin liquor that mixes is poured in the mould, is removed bubble, then 50 ℃ dry 8 hours down, be that 1% sodium hydroxide solution soaks deacidification to neutral with concentration again, the water flushing is dried and is promptly got chitosan/xylogen blend film.
Embodiment 10
It is in 1% aqueous acetic acid that the chitosan of 70g is joined 3500ml concentration, 50 ℃ stir down 1 hour stand-by; It is in 80% aqueous acetic acid that the xylogen of 30g is joined 3000ml concentration, stirs 2 hours down at 50 ℃, removes by filter insolubles; The lignin liquor that dissolving is good slowly was added drop-wise in the chitosan solution, 40 ℃ of following blended under agitation 5 hours; Chitosan/the lignin liquor that mixes is poured in the mould, is removed bubble, then 60 ℃ dry 10 hours down, be that 1% sodium hydroxide solution soaks deacidification to neutral with concentration again, the water flushing is dried and is promptly got chitosan/xylogen blend film.
Embodiment 11
It is in 1% aqueous acetic acid that the chitosan of 85g is joined 4250ml concentration, 50 ℃ stir down 2 hours stand-by; It is in 80% aqueous acetic acid that the xylogen of 15g is joined 1500ml concentration, stirs 1 hour down at 40 ℃, removes by filter insolubles; The lignin liquor that dissolving is good slowly was added drop-wise in the chitosan solution, 40 ℃ of following blended under agitation 3 hours; Chitosan/the lignin liquor that mixes is poured in the mould, is removed bubble, then 60 ℃ dry 8 hours down, be that 1% sodium hydroxide solution soaks deacidification to neutral with concentration again, the water flushing is dried and is promptly got chitosan/xylogen blend film.
Embodiment 12
It is in 1% aqueous acetic acid that the chitosan of 80g is joined 4000ml concentration, 50 ℃ stir down 1.5 hours stand-by; It is in 80% aqueous acetic acid that the xylogen of 20g is joined 2000ml concentration, stirs 1.5 hours down at 50 ℃, removes by filter insolubles; The lignin liquor that dissolving is good slowly was added drop-wise in the chitosan solution, 40 ℃ of following blended under agitation 4 hours; Chitosan/the lignin liquor that mixes is poured in the mould, is removed bubble, then 60 ℃ dry 9 hours down, be that 1% sodium hydroxide solution soaks deacidification to neutral with concentration again, the water flushing is dried and is promptly got chitosan/xylogen blend film.
Comparative example
It is in 1% aqueous acetic acid that the chitosan of 100g is joined 5000ml concentration, stirred 2 hours down at 50 ℃, be poured in the mould then, remove bubble, following dry 10 hours at 40 ℃ then, be that 1% sodium hydroxide solution soaks deacidification to neutral with concentration again, the water flushing, oven dry promptly gets chitosan film.
In order to characterize the chitosan/xylogen blend film of the present invention's preparation, respectively chitosan, xylogen and chitosan/xylogen blend film has been carried out examination of infrared spectrum, its spectrogram is seen accompanying drawing 1.By Fig. 1-a as seen, xylogen 3420cm
-1The stretching vibration peak that belongs to O-H, 1718cm
-1The existence explanation xylogen at peak contains carbonyl, 1605cm
-1～1460cm
-1Three peaks are phenyl ring skeleton stretching vibration peak, 1217cm
-1The flexural vibration peak that belongs to the C-O that links to each other with phenyl ring, 1117cm
-1Belong to the C-O stretching vibration.By Fig. 1-b as seen, pure chitosan 3440cm
-1The stretching vibration peak that belongs to O-H, 1653cm
-1Belong to acid amides I band, 1090cm
-1Belong to the C-O stretching vibration peak.And content of lignin be in the infrared spectrum of 20% blend film as seen, the stretching vibration peak of O-H is at 3420cm
-1, acid amides I is with at 1467cm
-1, the C-O stretching vibration peak is at 1082cm
-1After promptly adding xylogen, red shift all takes place in the stretching vibration peak of the O-H of chitosan, acid amides I band, C-O stretching vibration peak, shows that carbonyl and the phenolic hydroxyl group on hydroxyl, carbonyl and the xylogen on the chitosan formed hydrogen bond.
For tensile strength, elongation at break, storage modulus test, elongation at break and the thermal characteristics of investigating chitosan provided by the invention/xylogen blend film, mould material to embodiment 7,10,12 and comparative example acquisition has carried out Mechanics Performance Testing according to IS0527-3:1995 (E) standard, carried out the dynamic mechanical analysis test at TA Q800 DMA instrument, on WAT-2P thermobalance instrument, carry out the thermal weight loss test, the results are shown in Table 1.
Table 1
| Corresponding embodiment | Chitosan/content of lignin | Tensile strength (MPa) | Storage modulus (MPa) | Elongation at break (%) | Second-order transition temperature (℃) | Weightless 20% temperature (℃) |
| Comparative example | 100/0 | 43.3 | 1512 | 52.2 | 140 | 202 |
| 7 | 90/10 | 47.3 | 3462 | 45.2 | 1 55 | 235 |
| 12 | 80/20 | 67.3 | 3137 | 43.2 | 159 | 241 |
| 10 | 70/30 | 42.00 | 4133 | 15.3 | 157 | 267 |
| The comparison of embodiment 2 and pure shell membrane glycan film | 55％ | 107％ | -17％ | 14％ | 20％ | |
As shown in Table 1, mostly good (the pure chistosan film tensile strength is 43.3MPa among the present invention than pure chistosan film for the tensile strength of chitosan provided by the invention/xylogen blend film, elongation at break, storage modulus test, elongation at break and thermal characteristics, compare on the low side with above bibliographical information, this is because chitosan tensile strength and chitosan molecule amount, and the batten water content is relevant when doing Elongation test), especially when content of lignin is 20%, the tensile strength of blend film, storage modulus, thermostability have all obtained to improve by a relatively large margin.
In addition, in order to investigate the homogeneity of chitosan and xylogen blend in the blended degradable membrane provided by the invention, with scanning electron microscope it has been carried out morphology observation, its photo is seen accompanying drawing 2.Xylogen is uniformly dispersed in whole chitosan basal body as seen from the figure, and the interaction that this more helps chitosan and xylogen makes its mechanical property and thermostability improve a lot than pure chitosan.
Claims (5)
1. chitosan/xylogen blended degradable membrane, it is characterized in that this film contains by weight percentage without chemical treatment, xylogen 10～30% with primary formation, its thickness is 0.05～0.2mm, tensile strength is 42.0～67.3MPa, elongation at break is 15.3～47.6%, glass transition temperature Tg is 155～159 ℃, and storage modulus is 3462～4133MPa, and its infrared spectrum is presented at 3420cm
-1There is the O-H of xylogen and chitosan to form the stretching vibration peak of hydrogen bond generation red shift, 1082cm mutually
-1There is the C-0 of xylogen and chitosan to form the stretching vibration peak of hydrogen bond generation red shift mutually.
2. method for preparing the described chitosan of claim 1/xylogen blended degradable membrane, the processing step and the condition of this method are as follows:
1. dissolve chitosan and will be by weight percentage 70～90% chitosan and join in the aqueous acetic acid, stir 1～2 hour down to dissolving fully at 20～50 ℃, stand-by;
2. dissolved lignin will be that 10～30% xylogen joins in the aqueous organopolysiloxane by weight percentage, stir 1～2 hour down to dissolving fully at 20～50 ℃, remove by filter insolubles;
3. solution blending will dissolve good xylogen and slowly be added drop-wise in the chitosan solution, 20～50 ℃ of following blended under agitation 3～5 hours;
4. film forming is poured the chitosan/lignin liquor that mixes in the mould into, removes bubble, then 40～60 ℃ dry 8～10 hours down, be that 1% sodium hydroxide solution soaks deacidification to neutral with concentration again, washing is dried and is promptly got chitosan/xylogen blend film.
3. the preparation method of chitosan according to claim 2/xylogen blended degradable membrane, the concentration that it is characterized in that used aqueous acetic acid is 1%.
4. the preparation method of chitosan according to claim 2/xylogen blended degradable membrane, the concentration that it is characterized in that used aqueous organopolysiloxane is 80%.
5. according to the preparation method of claim 2 or 4 described chitosan/xylogen blended degradable membranes, it is characterized in that organic solvent is an acetic acid in the employed aqueous organopolysiloxane of dissolved lignin, acetone, ethanol, any in the tetrahydrofuran (THF).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100502915A CN101220176B (en) | 2007-10-18 | 2007-10-18 | Blended degradable membrane of chitosan/xylogen and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100502915A CN101220176B (en) | 2007-10-18 | 2007-10-18 | Blended degradable membrane of chitosan/xylogen and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101220176A true CN101220176A (en) | 2008-07-16 |
| CN101220176B CN101220176B (en) | 2010-04-07 |
Family
ID=39630270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100502915A Expired - Fee Related CN101220176B (en) | 2007-10-18 | 2007-10-18 | Blended degradable membrane of chitosan/xylogen and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101220176B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102154812A (en) * | 2011-01-20 | 2011-08-17 | 浙江科瑞新材料有限公司 | Production method of preservative natural cellulose membrane |
| CN101704955B (en) * | 2009-07-16 | 2011-11-30 | 大连海事大学 | Method for preparing ultra-oleophobic surface underwater |
| CN102430395A (en) * | 2011-10-10 | 2012-05-02 | 沈阳理工大学 | Method for preparing chitosan cross-linking vanillin absorbing membrane |
| CN104178027A (en) * | 2014-08-22 | 2014-12-03 | 西南科技大学 | Preparation and application methods of biomass-based self-disintegrating radioactive contamination detergent |
| CN105853265A (en) * | 2016-04-05 | 2016-08-17 | 王兆进 | Method for dissolving tremella liquid in film-forming agent and drying |
| CN105853266A (en) * | 2016-04-05 | 2016-08-17 | 王兆进 | Processing technology for dissolving tremella solution into a film-forming agent |
| CN107540859A (en) * | 2017-09-12 | 2018-01-05 | 北京林业大学 | Preparation method and applications of the high-intensity high combustion property timber from hydrolysate group compound film |
| CN107822919A (en) * | 2017-11-17 | 2018-03-23 | 天津科技大学 | A kind of uvioresistant moisturizing spray film and preparation method thereof |
| CN111395367A (en) * | 2020-03-30 | 2020-07-10 | 广西路桥工程集团有限公司 | Vegetation concrete greening structure and method for mountain high-speed rocky side slope |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2272447A (en) * | 1992-11-17 | 1994-05-18 | Sandoz Ltd | Improvements in or relating to organic compounds |
| CN1053935C (en) * | 1993-02-19 | 2000-06-28 | 武汉大学 | Method for preparation of high waterproof high strength regenerative cellulose membrane |
| CN1464029A (en) * | 2002-06-19 | 2003-12-31 | 李恩辉 | Lignin water conservation and moisture-holding composite liquid mulching film |
-
2007
- 2007-10-18 CN CN2007100502915A patent/CN101220176B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704955B (en) * | 2009-07-16 | 2011-11-30 | 大连海事大学 | Method for preparing ultra-oleophobic surface underwater |
| CN102154812A (en) * | 2011-01-20 | 2011-08-17 | 浙江科瑞新材料有限公司 | Production method of preservative natural cellulose membrane |
| CN102154812B (en) * | 2011-01-20 | 2012-07-25 | 浙江科瑞新材料有限公司 | Production method of preservative natural cellulose membrane |
| CN102430395A (en) * | 2011-10-10 | 2012-05-02 | 沈阳理工大学 | Method for preparing chitosan cross-linking vanillin absorbing membrane |
| CN104178027A (en) * | 2014-08-22 | 2014-12-03 | 西南科技大学 | Preparation and application methods of biomass-based self-disintegrating radioactive contamination detergent |
| CN104178027B (en) * | 2014-08-22 | 2016-08-24 | 西南科技大学 | A kind of biomass-based method of preparation and use from disintegration-type radioactive pollution detergent |
| CN105853265A (en) * | 2016-04-05 | 2016-08-17 | 王兆进 | Method for dissolving tremella liquid in film-forming agent and drying |
| CN105853266A (en) * | 2016-04-05 | 2016-08-17 | 王兆进 | Processing technology for dissolving tremella solution into a film-forming agent |
| CN107540859A (en) * | 2017-09-12 | 2018-01-05 | 北京林业大学 | Preparation method and applications of the high-intensity high combustion property timber from hydrolysate group compound film |
| CN107540859B (en) * | 2017-09-12 | 2020-06-19 | 北京林业大学 | Preparation method and application of high-strength high-flame-retardancy wood self-hydrolysate-based composite membrane |
| CN107822919A (en) * | 2017-11-17 | 2018-03-23 | 天津科技大学 | A kind of uvioresistant moisturizing spray film and preparation method thereof |
| CN111395367A (en) * | 2020-03-30 | 2020-07-10 | 广西路桥工程集团有限公司 | Vegetation concrete greening structure and method for mountain high-speed rocky side slope |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101220176B (en) | 2010-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101220176B (en) | Blended degradable membrane of chitosan/xylogen and method for producing the same | |
| CN101463137B (en) | Method for preparing natural polymer blended membrane with ion liquid as solvent | |
| Yang et al. | Effects of preparation methods on the morphology and properties of nanocellulose (NC) extracted from corn husk | |
| Chen et al. | Comparative study on the films of poly (vinyl alcohol)/pea starch nanocrystals and poly (vinyl alcohol)/native pea starch | |
| Wu et al. | Green composite films prepared from cellulose, starch and lignin in room-temperature ionic liquid | |
| Ibrahim et al. | Synthesis and characterization of polyvinyl alcohol/nanospherical cellulose particle films | |
| Yang et al. | Enhanced permeability, mechanical and antibacterial properties of cellulose acetate ultrafiltration membranes incorporated with lignocellulose nanofibrils | |
| CN107722368B (en) | surface oxidized cellulose nanofiber/layered double-metal hydroxide composite membrane and preparation method thereof | |
| Xu et al. | Amylose/cellulose nanofiber composites for all-natural, fully biodegradable and flexible bioplastics | |
| Fourati et al. | Cellulose nanofibrils reinforced PBAT/TPS blends: Mechanical and rheological properties | |
| CN109825045A (en) | A kind of graphene composite biomass enhancing PBS/PBAT biological degradable composite material and preparation method thereof | |
| Morgado et al. | Biobased films prepared from NaOH/thiourea aqueous solution of chitosan and linter cellulose | |
| CN104693464A (en) | Preparation method of lignin-nanocelluose reinforced polylactic acid composite film | |
| Fahma et al. | PVA nanocomposites reinforced with cellulose nanofibers from oil palm empty fruit bunches (OPEFBs) | |
| CN104130425B (en) | A kind of preparation method of material of regenerated cellulose | |
| Wei et al. | Structure and properties of all-cellulose composites prepared by controlling the dissolution temperature of a NaOH/Urea solvent | |
| Li et al. | Thermally stable and tough coatings and films using vinyl silylated lignin | |
| Bao et al. | Solid solid phase change (SSPC) chitosan-g-mPEG fiber with improved mechanical performance via in-situ wet spinning process | |
| Shamsuri et al. | Properties and applications of cellulose regenerated from cellulose/imidazolium-based ionic liquid/co-solvent solutions: A short review | |
| Yu et al. | A novel interpenetrating polymer network of natural rubber/regenerated cellulose made by simple co-precipitation | |
| Sriruangrungkamol et al. | Modification of nanocellulose membrane by impregnation method with sulfosuccinic acid for direct methanol fuel cell applications | |
| Cui et al. | Fabrication of (PPC/NCC)/PVA composites with inner-outer double constrained structure and improved glass transition temperature | |
| Brooke et al. | Nanocellulose and PEDOT: PSS composites and their applications | |
| CN113136053A (en) | Preparation method of lignocellulose three-component double-crosslinking gel, gel and application | |
| Asandulesa et al. | Cellulose-based films with enhanced load of nitrogen containing heterocycles: The impact on the surface morphology and proton conductivity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: The Yanshan Mountain, Beijing with become rubber and plastic new material Co., Ltd Assignor: Sichuan University Contract record no.: 2011110000040 Denomination of invention: Blended degradable membrane of chitosan/xylogen and method for producing the same Granted publication date: 20100407 License type: Exclusive License Open date: 20080716 Record date: 20110607 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100407 Termination date: 20161018 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |