Degradable packaging film material and preparing method and application thereof

A packaging film and raw material technology, applied in the preparation of degradable packaging film materials, in the field of degradable packaging film materials, can solve the problems of poor mechanical properties, high production cost, poor fresh-keeping effect, etc., to reduce moisture permeability and reduce production costs Low, good barrier performance

Inactive Publication Date: 2016-08-24
HEILONGJIANG BAYI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A degradable packaging film material, preparation method and application provided by the present invention can solve the problem of poor mechanical properties, poor water resistance, high production cost and difficult recycling of some existing starch-based composite packaging materials, and can be directly used as food packaging materials , there is a problem of poor fresh-keeping effect and easy damage

Method used

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  • Degradable packaging film material and preparing method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The degradable packaging film material of embodiment 1, its raw material is made of 1.00% rice straw fiber, 3.00% corn cross-linked starch, 3.00% polyvinyl alcohol-carboxymethyl cellulose mixed solution, 2.28% Glyoxal, 3.79% glycerin, 86.93% deionized water, and the polyvinyl alcohol-carboxymethyl cellulose mixture is formed by mixing polyvinyl alcohol and carboxymethyl cellulose in a mass ratio of 1:2, specifically Follow the steps below to implement:

[0026] Step 1, weigh the rice straw fiber with a mass concentration of 1.00%, 3.00% corn cross-linked starch, 3.00% polyvinyl alcohol-carboxymethyl cellulose mixture, 2.28% glyoxal, and 3.79% glycerin , 86.93% deionized water;

[0027] Step 2, fully mix the corn cross-linked starch weighed in step 1 and part of the deionized water, and stir in a constant temperature water bath at 90°C until gelatinized to obtain a corn cross-linked starch solution, in which the amount of deionized water accounts for the total Half of ...

Embodiment 2

[0031] The degradable packaging film material of embodiment 2, its raw material is made of 0.90% rice straw fiber, 2.85% corn cross-linked starch, 3.20% polyvinyl alcohol-carboxymethyl cellulose mixed solution, 2.45% Glyoxal, 3.50% glycerin, 87.10% deionized water, and the polyvinyl alcohol-carboxymethyl cellulose mixture is formed by mixing polyvinyl alcohol and carboxymethyl cellulose in a mass ratio of 1:2, specifically Follow the steps below to implement:

[0032] Step 1, weigh the rice straw fiber with a mass concentration of 0.90%, 2.85% corn cross-linked starch, 3.20% polyvinyl alcohol-carboxymethyl cellulose mixed solution, 2.45% glyoxal, and 3.50% glycerin , 87.10% deionized water;

[0033] Step 2, fully mix the corn cross-linked starch weighed in step 1 and part of the deionized water, and stir in a constant temperature water bath at 94°C until gelatinization to obtain a corn cross-linked starch solution, in which the amount of deionized water accounts for the total...

Embodiment 3

[0037] The degradable packaging film material of embodiment 3, its raw material is made of 1.10% rice straw fiber, 3.20% corn cross-linked starch, 2.80% polyvinyl alcohol-carboxymethyl cellulose mixed solution, 2.15% Glyoxal, 3.90% glycerin, 86.85% deionized water, and the polyvinyl alcohol-carboxymethyl cellulose mixture is formed by mixing polyvinyl alcohol and carboxymethyl cellulose in a mass ratio of 1:2, specifically Follow the steps below to implement:

[0038] Step 1, weighing the mass concentration percentage is 1.10% rice straw fiber, 3.20% corn cross-linked starch, 2.80% polyvinyl alcohol-carboxymethyl cellulose mixed solution, 2.15% glyoxal, 3.90% glycerin , 86.85% deionized water;

[0039] Step 2, fully mix the corn cross-linked starch weighed in step 1 and part of the deionized water, and stir in a constant temperature water bath at 92°C until gelatinization to obtain a corn cross-linked starch solution, in which the amount of deionized water accounts for the to...

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Abstract

The invention discloses a degradable packaging film material. The degradable packaging film material is prepared from, by mass concentration, 0.90-1.10% of straw stalk fiber, 2.80-3.20% of corn crosslinked starch, 2.70-3.30% of polyvinyl alcohol-carboxymethylcellulose mixed liquor, 2.10-2.50% of glyoxal, 3.50-4.00% of glycerinum and 85.90-88.00% of deionized water, wherein the polyvinyl alcohol-carboxymethylcellulose mixed liquor is obtained by mixing polyvinyl alcohol with carboxymethylcellulose according to the mass ratio of 1:2. Compared with ordinary corn starch films, the degradable packaging film material has the advantages that tensile strength is improved by 122% or more, stretch rate is increased by 28% or more, water vapor transmission rate is reduced by 11% or more, damage does not occur easily, barrier property is high and manufacturing cost is low. At 4 DEG C, strawberry and mulberry preservation time can reach 8 d, and a good degradation effect is realized. The invention further provides a preparing method of the degradable packaging film material.

Description

technical field [0001] The invention belongs to the technical field of food packaging materials, and in particular relates to a degradable packaging film material, and also relates to a preparation method and application of the degradable packaging film material. Background technique [0002] With the advancement of science and technology and the improvement of people's cultural and moral quality, people have higher requirements for the safety and environmental protection of food preservation packaging. Degradable packaging film materials or completely biodegradable packaging materials have become the development of food packaging materials technology. trend. Completely biodegradable plastics are mainly made from natural polymers (such as starch, cellulose, chitin) or agricultural by-products through microbial fermentation or synthesis of biodegradable polymers. It is a new type of non-polluting plastic that can replace plastics. The fresh-keeping packaging material for fre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L97/02C08L29/04C08L1/28C08K5/07C08K5/053C08J5/18
CPCC08J5/18C08J2303/02C08J2401/28C08J2429/04C08J2497/02C08L3/02C08L2201/06C08L2201/14C08L2203/16C08L2205/035C08L2205/16C08L97/02C08L29/04C08L1/286C08K5/07C08K5/053
Inventor 张东杰高飞孟令伟李志江孙婷婷
Owner HEILONGJIANG BAYI AGRICULTURAL UNIVERSITY
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