Non-toxic polyvinyl alcohol environment-friendly full-degradable plastic film and manufacture method thereof

A polyvinyl alcohol and plastic film technology, applied in the field of natural polymer materials, can solve the problems of poor processing performance, high brittleness and water resistance, and single function of fully degradable plastic film, and achieves the effect of improving water resistance and increasing compatibility.

Inactive Publication Date: 2015-09-23
TONGLING FOUNDER PLASTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of natural polymers: poor processing performance, brittleness and water resistance, etc., their application range is limited.
To solve this problem, a single modification method such as plasticizing, acid adjustment, crosslinking, filling or blending is often used. However, this single modification method is limited, and the fully degradable plastic film prepared has a single function and high cost. Industrial production
Nano-silica materials have special functional effects of nanoparticles, which can be used to improve the mechanical properties and water resistance of natural polymer films and polyvinyl alcohol films. There are very few research reports on composite films with polyvinyl alcohol

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The non-toxic polyvinyl alcohol environment-friendly fully degradable plastic film is characterized in that it is made of the following raw materials in parts by weight: polyvinyl alcohol 92, polyglutamic acid 28, wheat starch 70, nano silicon dioxide 3, Coptidis honey 6, glycerin 4.9, calcium oxide 3, bamboo charcoal fiber 8, zirconium carbide 0.2, perlite powder 1, appropriate amount of water.

[0014] The preparation method comprises the following steps:

[0015] (1) Add an appropriate amount of water to the wheat starch and stir it into a paste, heat and pre-gelatinize it for 10-20 minutes, add calcium oxide and glycerin, stir and mix at a constant temperature for 2-3 hours, suction filter and dry naturally to obtain modified wheat starch;

[0016] (2) Vacuum-dry the bamboo charcoal fiber at 105°C for 2-4 hours, add coptis honey, perlite powder, and nano-silica, stir and grind for 2-3 hours, and dry;

[0017] (3) Put polyvinyl alcohol in a water bath at 80-90°C and...

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Abstract

The invention discloses a non-toxic polyvinyl alcohol environment-friendly full-degradable plastic film. Polyvinyl alcohol and wheat starch are used as main film forming matters, and compared with a traditional technology, the invention has the advantages that nano silica and wheat starch are modified through physical and chemical methods and cooperate with other effective ingredients mutually, so that hydroxyl groups in wheat starch and polyvinyl alcohol molecules are preferentially combined with a proper amount of nano silica surface hydroxyl groups to form hydrogen bonds, therefore, the degree of compatibility of wheat starch and polyvinyl alcohol is improved, partial hydroxyl groups in the wheat starch and polyvinyl alcohol are sealed, water resistance of the film is improved and the prepared full-degradable plastic film has the advantages of non-toxicity, hydrophobicity, fertilizer conservation and the like and can be used as an agricultural film.

Description

technical field [0001] The invention relates to the technical field of natural polymer materials, in particular to a non-toxic polyvinyl alcohol environment-friendly fully degradable plastic film and a manufacturing method thereof. Background technique [0002] Synthetic polymer materials bring great convenience to people's life, but also cause serious pollution to the environment. In addition, the oil reserves for making traditional plastics are constantly decreasing. Therefore, renewable and environmentally friendly natural polymer materials have become a research hotspot. , Cellulose, starch, protein, etc. are natural polymers that are actually studied and applied more at present, so natural polymer-type fully degradable materials have become one of the research hotspots of new environment-friendly materials. [0003] Natural polymers have attracted extensive attention in the fields of food packaging and plastic film applications due to their wide source of raw materials,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L3/02C08L77/04C08K13/06C08K3/36C08K5/053C08K3/22C08K7/06C08K3/14
Inventor 陈可夏陈可亮潮建平
Owner TONGLING FOUNDER PLASTICS TECH
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