CN112159551A - Biodegradable material and preparation method thereof - Google Patents
Biodegradable material and preparation method thereof Download PDFInfo
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- CN112159551A CN112159551A CN202011076876.6A CN202011076876A CN112159551A CN 112159551 A CN112159551 A CN 112159551A CN 202011076876 A CN202011076876 A CN 202011076876A CN 112159551 A CN112159551 A CN 112159551A
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- biodegradable material
- ginger
- membrane
- material according
- hydroxypropionic acid
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- 239000000463 material Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 241000234314 Zingiber Species 0.000 claims abstract description 38
- 235000006886 Zingiber officinale Nutrition 0.000 claims abstract description 38
- 235000008397 ginger Nutrition 0.000 claims abstract description 38
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000012528 membrane Substances 0.000 claims abstract description 18
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000007790 scraping Methods 0.000 claims abstract description 9
- 239000002893 slag Substances 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 230000001112 coagulating effect Effects 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 238000004537 pulping Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 18
- 230000015271 coagulation Effects 0.000 claims description 14
- 238000005345 coagulation Methods 0.000 claims description 14
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000002028 Biomass Substances 0.000 abstract description 6
- 239000005022 packaging material Substances 0.000 description 10
- 229920003023 plastic Polymers 0.000 description 7
- 239000004033 plastic Substances 0.000 description 7
- 239000001913 cellulose Substances 0.000 description 6
- 229920002678 cellulose Polymers 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 230000003385 bacteriostatic effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- VFLDPWHFBUODDF-FCXRPNKRSA-N curcumin Chemical compound C1=C(O)C(OC)=CC(\C=C\C(=O)CC(=O)\C=C\C=2C=C(OC)C(O)=CC=2)=C1 VFLDPWHFBUODDF-FCXRPNKRSA-N 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 229940109262 curcumin Drugs 0.000 description 1
- 235000012754 curcumin Nutrition 0.000 description 1
- 239000004148 curcumin Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- VFLDPWHFBUODDF-UHFFFAOYSA-N diferuloylmethane Natural products C1=C(O)C(OC)=CC(C=CC(=O)CC(=O)C=CC=2C=C(OC)C(O)=CC=2)=C1 VFLDPWHFBUODDF-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000000126 substance Substances 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/02—Cellulose; Modified cellulose
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/35—Heterocyclic compounds having nitrogen in the ring having also oxygen in the ring
- C08K5/357—Six-membered rings
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The present disclosure relates to a biodegradable material comprising: ginger residue, N-methylmorpholine oxide and 2-hydroxypropionic acid; and mixing the components to obtain a membrane preparation solution, scraping the membrane, then immersing the membrane into a coagulating bath, and drying to obtain the biodegradable material. The disclosure also relates to a preparation method of the biodegradable material, which comprises the following steps: (1) cutting ginger blocks, juicing and collecting ginger residues; taking 360g of oven-dried ginger residue, adding 23L of water, pulping for 90min, washing, concentrating, filtering, and drying for later use; (2) adding 5-10g of dried ginger slag into 130-150g N-methylmorpholine oxide, heating to 100 ℃, stirring for 30 minutes, adding 0.5-2g of 2-hydroxypropionic acid, reacting for 2-3 hours, and cooling to 60 ℃ to obtain a membrane-making solution; (3) scraping the film, then immersing the film into a coagulating bath, and drying to obtain the degradable biomass-based film material base material.
Description
Technical Field
The disclosure relates to the field of packaging materials, in particular to a biodegradable material and a preparation method thereof.
Background
The disclosure relates to a biodegradable material, and belongs to the field of packaging materials. In recent years, plastic limitation has been raised worldwide, so that the application field of plastic-based packaging materials is limited, and the replacement of high molecular plastics by degradable materials such as natural biomass resources becomes the focus of research of researchers. The degradable material packaging industry also faces a serious challenge, and although the attention on biodegradable materials is gradually increased due to the increase of environmental awareness, compared with the traditional plastic packaging material, the performance of the commonly used alternative materials such as cellulose, starch and the like at present cannot reach the performance of plastics in strength, heat insulation, water resistance, sealing and the like. In 2018, China writes 'ecological civilization' into constitution, so that the people can be aware of the importance of ecological environment, respond to the major trend of global environmental protection, use the ecological civilization and the green development as a slogan for the development of the people, and solve the white pollution problem at present.
The biomass-based material has the advantages of universality, degradability, reproducibility and the like, and must occupy a certain position in the packaging industry, and currently, products such as degradable film materials prepared from cellulose and disposable lunch boxes prepared from straws gradually replace plastic-based products. The method provides a hint for people, and the raw materials can be used as the basis for modification processing and utilization to finally replace plastic-based products, so that the real green environmental protection and sustainable development are realized.
Disclosure of Invention
The purpose of the present disclosure is to overcome the above-mentioned deficiencies of the prior art and to provide a method for preparing a biodegradable material.
The present disclosure provides a biodegradable material comprising:
the ginger slag is removed,
n-methyl morpholine oxide is added into the reaction kettle,
2-hydroxypropionic acid;
and mixing the components to obtain a membrane preparation solution, scraping the membrane, then immersing the membrane into a coagulating bath, and drying to obtain the biodegradable material.
In a preferred embodiment of the process according to the invention,
the mass of the ginger slag is 5-10g,
the mass of the N-methylmorpholine oxide is 130-150g,
the mass of the 2-hydroxypropionic acid is 0.5-2 g.
In a preferred embodiment, the gelling medium used in the coagulation bath is deionized water.
In a preferred embodiment, the coagulation bath temperature is 10-20 ℃ and the coagulation time is 3-5 minutes.
The present disclosure also provides a method for preparing a biodegradable material, comprising:
(1) cutting ginger blocks, juicing and collecting ginger residues; taking 360g of oven-dried ginger residue, adding 23L of water, pulping for 90min, washing, concentrating, filtering, and drying for later use;
(2) adding 5-10g of dried ginger slag into 130-150g N-methylmorpholine oxide, heating to 100 ℃, stirring for 30 minutes, adding 0.5-2g of 2-hydroxypropionic acid, reacting for 2-3 hours, and cooling to 60 ℃ to obtain a membrane-making solution;
(3) and (4) scraping the film, then immersing the film into a coagulating bath, and drying to obtain the biodegradable material.
In order to obtain a biodegradable material with good properties, the cellulose concentration in the membrane-forming solution is increased, and the mechanical properties of the membrane are increased, but too high a cellulose concentration causes difficulties in membrane formation. Therefore, the weight ratio of the dried ginger slag to the N-methylmorpholine oxide is 5-10: 130-150. When the amount of the ginger residues is less than 5g, the cellulose concentration in the film-making liquid is low, the mechanical strength of the prepared biodegradable material is poor, and the solvent consumption is large; when the amount of the ginger residue is more than 10g, the cellulose concentration in the film-forming solution is too high, and the viscosity of the polymer rapidly increases with the increase of the concentration of the polymer, so that the dissolution property of the polymer is deteriorated and the fluidity of the solution is lowered, thereby making film formation difficult.
In a preferred embodiment, step (1) is filtered using a 200 mesh screen.
In a preferred embodiment, the mass of the N-methylmorpholine oxide in step 2) is 130-140 g.
In a preferred embodiment, the mass of the N-methylmorpholine oxide in step 2) is 140-150 g.
In a preferred embodiment, the mass of the 2-hydroxypropionic acid in step 2) is from 0.5g to 1 g.
In a preferred embodiment, the mass of the 2-hydroxypropionic acid in step 2) is from 1g to 2 g.
The degradable packaging material synthesized by the 2-hydroxypropionic acid and the N-methylmorpholine oxide can improve the tensile strength of a formed film, and simultaneously, the transparency and the porosity are increased to a certain extent. When the amount of 2-hydroxypropionic acid added is less than 0.5g, the yield of the degradable packaging material decreases.
In a preferred embodiment, the gelling medium used in the coagulation bath is deionized water.
In a preferred embodiment, the coagulation bath temperature is in the range of 10-20 ℃.
In a preferred embodiment, the coagulation bath has a coagulation time of 3 to 5 minutes.
The solidification process is a process of removing the solvent in the membrane, the exchange speed of water and the solvent in the solidification process determines the final structure and performance of the membrane, and the factors influencing the exchange speed mainly comprise two factors: one is gel medium; the second is the gel temperature. The chemical potential difference between the gel medium and the solvent is large, the exchange speed between the solvent and the gel medium is high during the gel process, and the precipitation speed of macromolecules in the membrane preparation liquid is also high, or vice versa. The temperature of the coagulation bath will affect the gel crystallization of the film and the rate of exchange of solvent with the precipitant, thereby affecting the performance of the film.
Advantageous effects
Compared with the traditional packaging material, the packaging material obtained by the method has rich raw material sources, can be prepared into a renewable and biodegradable packaging material, and can be degraded by more than 90% in half a year, so that the environmental pollution is effectively reduced. In addition, the packaging material prepared by the method also has certain antibacterial activity.
Detailed Description
The present disclosure will be described in further detail with reference to the following embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail with reference to embodiments.
Examples
Example 1:
cutting ginger blocks, juicing by a juicer, collecting ginger residues, taking 360g of completely dried ginger residues, adding 23L of water, grinding for 90min, collecting ginger residues, washing, concentrating, filtering, and drying for later use. Adding a certain amount of 5g of grinded ginger residue into 150g N-methylmorpholine oxide, heating to 100 ℃, stirring for 30 minutes, adding 0.5g of 2-hydroxypropionic acid, reacting for 2-3 hours, cooling to 60 ℃, and scraping to obtain the degradable biomass base membrane material substrate.
Example 2
Cutting ginger blocks, juicing by a juicer, collecting ginger residues, taking 360g of completely dried ginger residues, adding 23L of water, grinding for 90min, collecting ginger residues, washing, concentrating, filtering, and drying for later use. Adding a certain amount of 8g of grinded ginger residue into 150g N-methylmorpholine oxide, heating to 100 ℃, stirring for 30 minutes, adding 1.5g of 2-hydroxypropionic acid, reacting for 2-3 hours, cooling to 60 ℃, and scraping to obtain the degradable biomass base membrane material substrate.
Example 3
Cutting ginger blocks, juicing by a juicer, collecting ginger residues, taking 360g of completely dried ginger residues, adding 23L of water, grinding for 90min, collecting ginger residues, washing, concentrating, filtering, and drying for later use. Taking a certain amount of 10g of mashed ginger residues, adding the ginger residues into 150g N-methylmorpholine oxide, heating to 100 ℃, stirring for 30 minutes, adding 2g of 2-hydroxypropionic acid, reacting for 2-3 hours, cooling to 60 ℃, and scraping to obtain the degradable biomass base membrane material base material.
The degradation performance, the bacteriostatic rate and the tensile strength of the PE films of examples 1-3 and the market are tested. The results obtained are listed in table 1 below.
Table 1 degradation performance, inhibition and tensile strength of examples 1-3 and commercial PE films.
| Degradability (6 months) | Bacteriostasis rate (Escherichia coli) | Tensile strength | |
| Example 1 | 91.32％ | 35.6％ | 22.02Mpa |
| Example 2 | 90.76％ | 34.2％ | 23.45Mpa |
| Example 3 | 90.11％ | 34.3％ | 26.35Mpa |
| Comparative example (commercially available PE film) | 12.5％ | Is free of | 32.66Mpa |
By comparison, the film materials prepared by the method disclosed by the invention have very good biodegradation performance compared with the commercially available PE film; and although the strength of the film material prepared by the method disclosed by the invention is not as high as that of a commercial PE film, the strength of the film material is relatively close to that of the commercial PE film. In addition, the ginger residues are used as raw materials, and the ginger contains a bacteriostatic component curcumin, so that the membrane material prepared by the method also has good bacteriostatic property.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (10)
1. A biodegradable material, characterized in that it comprises:
the ginger slag is removed,
n-methyl morpholine oxide is added into the reaction kettle,
2-hydroxypropionic acid;
and mixing the components to obtain a membrane preparation solution, scraping the membrane, then immersing the membrane into a coagulating bath, and drying to obtain the biodegradable material.
2. Biodegradable material according to claim 1,
the mass of the ginger slag is 5-10g,
the mass of the N-methylmorpholine oxide is 130-150g,
the mass of the 2-hydroxypropionic acid is 0.5-2 g.
3. Biodegradable material according to claim 1, characterized in that the gelling medium used in the coagulation bath is deionized water.
4. The biodegradable material according to claim 1, characterized in that said coagulation bath temperature is 10-20 ℃ and the coagulation time is 3-5 minutes.
5. A method for preparing a biodegradable material according to claim 1, characterized in that it comprises:
(1) cutting ginger blocks, juicing and collecting ginger residues; taking 360g of oven-dried ginger residue, adding 23L of water, pulping for 90min, washing, concentrating, filtering, and drying for later use;
(2) adding 5-10g of dried ginger slag into 130-150g N-methylmorpholine oxide, heating to 100 ℃, stirring for 30 minutes, adding 0.5-2g of 2-hydroxypropionic acid, reacting for 2-3 hours, and cooling to 60 ℃ to obtain a membrane-making solution;
(3) and (4) scraping the film, then immersing the film into a coagulating bath, and drying to obtain the biodegradable material.
6. The method for preparing a biodegradable material according to claim 5, wherein the filtration in step (1) is performed using a 200-mesh sieve.
7. The method for preparing biodegradable material according to claim 5, wherein the mass of N-methylmorpholine oxide in step (2) is 130-140 g.
8. The method for producing a biodegradable material according to claim 5, wherein the mass of said 2-hydroxypropionic acid in step (2) is 0.5g to 1 g.
9. The method for preparing biodegradable material according to claim 5, wherein the gel medium used in the coagulation bath in step (3) is deionized water.
10. The method for preparing biodegradable material according to claim 5, wherein the coagulation bath temperature in step (3) is 10-20 ℃ and the coagulation time is 3-5 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011076876.6A CN112159551A (en) | 2020-10-10 | 2020-10-10 | Biodegradable material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011076876.6A CN112159551A (en) | 2020-10-10 | 2020-10-10 | Biodegradable material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN112159551A true CN112159551A (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011076876.6A Pending CN112159551A (en) | 2020-10-10 | 2020-10-10 | Biodegradable material and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN112159551A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1480248A (en) * | 2002-09-04 | 2004-03-10 | 中国科学院大连化学物理研究所 | Separation membrane made from cellulose and its preparing method |
| CN105664729A (en) * | 2016-01-14 | 2016-06-15 | 青岛科技大学 | Organic/inorganic ultrafiltration membrane prepared by dissolving ginger stem and doping active carbon and method thereof |
| CN110818937A (en) * | 2019-11-19 | 2020-02-21 | 石家庄学院 | Preparation method and bacteriostatic reinforcement method of cellulose-polyvinyl alcohol degradable composite membrane |
-
2020
- 2020-10-10 CN CN202011076876.6A patent/CN112159551A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1480248A (en) * | 2002-09-04 | 2004-03-10 | 中国科学院大连化学物理研究所 | Separation membrane made from cellulose and its preparing method |
| CN105664729A (en) * | 2016-01-14 | 2016-06-15 | 青岛科技大学 | Organic/inorganic ultrafiltration membrane prepared by dissolving ginger stem and doping active carbon and method thereof |
| CN110818937A (en) * | 2019-11-19 | 2020-02-21 | 石家庄学院 | Preparation method and bacteriostatic reinforcement method of cellulose-polyvinyl alcohol degradable composite membrane |
Non-Patent Citations (2)
| Title |
|---|
| 周灿灿: "姜秆纤维素的制备及在制膜中的应用", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 谢玮等: "姜渣-玉米淀粉膜的制备及研究", 《包装工程》 * |
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Application publication date: 20210101 |