Hydrophobic full-degradable plastic film and making method of hydrophobic full-degradable plastic film

Abstract

The invention discloses a hydrophobic full-degradable plastic film and a making method of the hydrophobic full-degradable plastic film. The making method of the hydrophobic full-degradable plastic film lies in that polyvinyl alcohol and potato starch are used as main film forming matters, and compared with the prior art, the making method is characterized in that with the adoption of a physical-chemical method, nanosilicon dioxide and potato starch are modified, and at the same time, through matching with other effective constituents, hydroxide radicals in potato starch and polyvinyl alcohol molecules are enabled to be preferably combined with an appropriate amount of nanosilicon dioxide surface hydroxyl groups to form hydrogen bonds, so that the compatibility degree of potato starch and polyvinyl alcohol is increased, part of hydroxide radicals in the potato starch and polyvinyl alcohol are blocked, the water resisting property of the plastic film is improved, and the prepared full-degradable plastic film has a good mechanical property and hydrophobic property, and further has no impacts on the biodegradation rate and can enable the biodegradable plastics to be extensively applied.

Description

technical field [0001] The invention relates to the technical field of natural polymer materials, in particular to a hydrophobic 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 and excellen...

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