Light insect-proof fully-degradable plastic film and production method thereof

Abstract

The invention discloses a light insect-proof fully-degradable plastic film. Polyvinyl alcohol and brake root starch are adopted as main film-forming substances; compared with the traditional technology, nano silicon dioxide and brake root starch are modified in a physical-chemical method and matched with other active ingredients, so that hydroxyl in brake root starch and polyvinyl alcohol molecules can be combined with hydroxyl on the surface of an appropriate amount of nano silicon dioxide to form a hydrogen bond, the compatibility of the brake root starch and the polyvinyl alcohol can be improved, partial hydroxyl in the brake root starch and the polyvinyl alcohol is closed, the water resistance of the film can be improved, the prepared fully-degradable plastic film is light in weight and insect-proof and capable of being completely or partially degraded by microorganisms in the environment; moreover, the preparation method is simple in processing technology, capable of greatly reducing the production cost and easily realizing industrialized production and is good in industrial application prospect in the fields such as packaging, food transportation, agriculture and the like.

Description

technical field [0001] The invention relates to the technical field of natural polymer materials, in particular to a lightweight insect-proof 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, strong biodegradability...

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