In order to overcome these shortcomings, various kinds of modification the protein have been explored extensively: that are heated and alkali?acid modification?reducing agent treatment? cross-linking?auxiliary of addition?filled in modification etc to enhance the mechanical processing property, In order to get the protein plastics of soybean with pract.

This paper discusses variety of degradation plastics, biodegradable mechanism, present situation of studys for degradable plastics with soy protein and protein plastics degradability.

This paper summarized the research contents and progress of protein plastics ,including the kind of protein , the degradation principle of protein biodegradable plastics,modifying methods and the preparation techniques .

The results show that the tensile strength and Young modulus of the protein plastic are increased from 9.

Structures and mechanical properties of keratin materials;