Biodegradable packaging material and preparation method thereof

A technology of biodegradable and packaging materials, applied in the field of biodegradable packaging materials and its preparation, can solve problems such as pollution, endangering human survival and health, and endangering the environment, achieving high decomposition rate, increasing hydrophobicity, and improving environmental protection Effect

A technology of biodegradable and packaging materials, applied in the field of biodegradable packaging materials and its preparation, can solve problems such as pollution, endangering human survival and health, and endangering the environment, achieving high decomposition rate, increasing hydrophobicity, and improving environmental protection Effect

CN113462033AInactive Publication Date: 2021-10-01YUYAO SUN RAIN SPRAYER
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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] A biodegradable packaging material, comprising the following preparation method steps:

[0027] S1, prepare 20-40 parts of starch, 15-25 parts of cellulose, 15-25 parts of chitin, 10-20 parts of protein, 2-6 parts of polyvinyl alcohol, 1-3 parts of polymerizing agent, and 2-4 parts of plasticizer 3-5 parts of biodegradable additives;

[0028] S2, carry out superfine pulverization of starch, blend polyvinyl alcohol with starch, add a small amount of solubilizer, improve the uniformity of starch dispersion; deacetylate chitin under alkaline adjustment to generate chitosan; chitosan Acetic acid aqueous solution, polyvinyl alcohol aqueous solution, and plasticizer are mixed according to a certain ratio to make a mixture;

[0029] S3, the cellulose is chemically modified to make methyl cellulose, hydroxypropyl methyl cellulose, hydroxypropyl cellulose and carboxymethyl cellulose, from methyl cellulose, hydroxypropyl methyl cellulose , cellulose ether film made from water o...

Embodiment 1

[0033] Embodiment 1: Prepare 20 parts of starch, 15 parts of cellulose, 15 parts of chitin, 10 parts of protein, 2 parts of polyvinyl alcohol, 1 part of polymerization agent, 2 parts of plasticizer, 3 parts of biodegradation additive; Micro-grinding, blending polyvinyl alcohol and starch, adding a small amount of solubilizer to improve the uniformity of starch dispersion; deacetylating chitin under alkaline adjustment to generate chitosan; mixing chitosan with acetic acid aqueous solution, polyethylene Alcohol aqueous solution and plasticizer are mixed according to a certain ratio to make a mixture; the cellulose is chemically modified to make methyl cellulose, hydroxypropyl methyl cellulose, hydroxypropyl cellulose and carboxymethyl cellulose, Cellulose ether films prepared from aqueous or hydroalcoholic solutions of methyl cellulose, hydroxypropyl methyl cellulose, hydroxypropyl cellulose and carboxymethyl cellulose; polymerizing the resulting mixture with cellulose ether fil...

Embodiment 2

[0034] Embodiment 2: Prepare 30 parts of starch, 20 parts of cellulose, 20 parts of chitin, 15 parts of protein, 4 parts of polyvinyl alcohol, 2 parts of polymerization agent, 3 parts of plasticizer, 4 parts of biodegradation additive; Micro-grinding, blending polyvinyl alcohol and starch, adding a small amount of solubilizer to improve the uniformity of starch dispersion; deacetylating chitin under alkaline adjustment to generate chitosan; mixing chitosan with acetic acid aqueous solution, polyethylene Alcohol aqueous solution and plasticizer are mixed according to a certain ratio to make a mixture; the cellulose is chemically modified to make methyl cellulose, hydroxypropyl methyl cellulose, hydroxypropyl cellulose and carboxymethyl cellulose, Cellulose ether films prepared from aqueous or hydroalcoholic solutions of methyl cellulose, hydroxypropyl methyl cellulose, hydroxypropyl cellulose and carboxymethyl cellulose; polymerizing the resulting mixture with cellulose ether fi...

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Abstract

The invention relates to the technical field of packaging materials, in particular to a biodegradable packaging material and a preparation method thereof. The biodegradable packaging material is prepared from starch, cellulose, chitin, protein, polyvinyl alcohol, a polymerizing agent, a plasticizer and a biodegradable additive; the material is prepared from the following components in parts by weight: 20-40 parts of starch, 15-25 parts of cellulose, 15-25 parts of chitin, 10-20 parts of protein, 2-6 parts of polyvinyl alcohol, 1-3 parts of a polymerizing agent, 2-4 parts of a plasticizer and 3-5 parts of a biodegradable additive. The material is good in hydrophobic capacity, oil resistance, water resistance and high temperature resistance, and has the excellent properties of proper strength, grease resistance, flexibility, transparency, odorlessness, odorlessness, easiness in degradation, and has the good film forming characteristic; The biodegradable packaging material is high in decomposition rate, can realize biodegradation, improves environmental protection, and has better biodegradation characteristics.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a biodegradable packaging material and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the economy, people's pursuit of material and spirit is getting higher and higher, and there are correspondingly higher requirements for product packaging. When people buy products, they not only look at the aesthetics of the outer packaging, but also Consider other miscellaneous functions. It is precisely because people's pursuit of product packaging continues to improve that many new packaging materials are constantly being applied to product packaging. [0003] Synthetic polymer materials have the advantages of light weight, high strength, good chemical stability, and low price. However, while synthetic polymer materials bring convenience to people's lives and improve the quality of life, a large amount of waste after us...

Claims

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Application Information

Patent Timeline
01 Oct 2021
Publication
CN113462033A
IPC
C08L3/02; C08L1/28; C08L5/08; C08L89/00; C08L29/04; C08K5/053; C08J5/18
CPC
C08J5/18; C08J2303/02; C08J2401/28; C08J2405/08; C08J2489/00; C08J2429/04; C08K5/053
Inventors
毛寅