Fully-degradable plastic film with enhanced mechanical property and manufacturing method of fully-degradable plastic film

Abstract

The invention discloses a fully-degradable plastic film with enhanced mechanical property. The plastic film is characterized by being made from the following raw materials, by weight part, 80-85 of polylactic acid, 25-30 of hemp fibers, 0.8-1 of a silane coupling agent kh-550, 20-25 of corn starch, 12-14 of glycerin, 1.6-2 of epichlorohydrin, a proper amount of a sodium hydroxide solution with the concentration being 1 mol/L, a proper amount of hydrochloric acid with the concentration being 1 mol/L, a proper amount of distilled water, 1-1.5 of epoxidized soybean oil, 5-7 of natural latex, 2-3 of butyl lactate and 3-5 of bamboo fibers. The manufactured fully-degradable plastic film is good in toughness and mechanical property, is easy to degrade in a natural condition, and is safe and eco-friendly. The manufacturing method is innovative in process and convenient for industrial control. The fully-degradable plastic film can be widely applied to packages for food and daily necessities. The plastic film is safe and eco-friendly, can be fully degraded, and is high in degradation speed.

Description

technical field [0001] The invention relates to the technical field of plastic films, in particular to a fully degradable plastic film with enhanced mechanical properties and a preparation method thereof. Background technique [0002] In order to reduce the use of petroleum-based plastic materials, protect the environment, and alleviate the increasingly severe shortage of petroleum resources, the development and utilization of bio-based degradable and environmentally friendly plastic materials has become the focus of research in the field of packaging materials. [0003] Polylactic acid material is one of the most widely used degradable plastic materials at present. As a packaging film material, PLA has good transparency, mechanical properties and biocompatibility, high strength, thermoplasticity, hydrophobicity, easy molding and processing, and can be completely Degradation, the degradation products are non-toxic and harmless to the human body, come from renewable resources...

AI Technical Summary

Problems solved by technology

In the present invention, the silane coupling agent kh-550 is used to pretreat the hemp fiber, thereby improving the interface contact effect and compatibility, and improving the mechanical properties of the material; then modifying the cornstarch through a series of processes and adding In the overall product, it solves the problem of poor...