Starch-base degradable plastic and preparation method

Abstract

The invention particularly relates to a starch-base degradable plastic and a preparation method, solving the technical problems of incomplete degradation, complex preparation method, ultrahigh cost, poor practical property of degradable plastic, and the like, of the present starch-base degradable plastic. The starch-base degradable plastic is prepared by mixing and reacting 60-90 parts of base starch, 1-5 parts of a cross-linking agent, 8-20 parts of a plasticizer and 1-5 parts of a degradable accelerant. According to the starch-base degradable plastic, different starches are compounded for realizing the adjustable and controllable structure; under the synergic effect of cross-linking reaction, the mechanical properties of the products are promoted; the plasticizer can be used for promoting the processing properties and toughness of the products; the degradable accelerant can be used for realizing the synergic degradation of optical degradation and biodegradability of the products and promoting the degradation property; according to the invention, the product cost is low; the raw materials are easily available; a conventional processing mode is adopted for preparing various common disposable plastic products.

Description

technical field [0001] The invention belongs to degradable plastics and a preparation method, in particular to a starch-based degradable plastic and a preparation method. Background technique [0002] Plastic has the characteristics of light weight, good performance, easy processing, and low price, and has been widely used. While plastic brings convenience to human beings, it also causes serious harm to the ecological environment because it is not easy to recycle. The development of degradable plastics is considered to be one of the effective ways to solve plastic pollution, and has attracted the attention of relevant researchers at home and abroad in recent years. Starch is a renewable resource with good hydrolytic degradation and biodegradation characteristics, and is finally converted into clean carbon dioxide and water. It has broad application prospects in the field of degradable plastics. At present, there are three main directions for developing degradable plastics ...

AI Technical Summary

Problems solved by technology

This method is complicated to operate and the cost is extremely high; 3) Using starch as the main material, the development of whole starch degradable plastics

In this regard, a single starch is usually selected as the main material. Due to the limitation of the structure of the raw material, the practical performance of the prepared degradable plastic is poor.