The hottest starch based fully biodegradable mater

Starch based fully biodegradable material came out

on the 16th, it was reported from the Changchun Institute of Applied Chemistry, Chinese Academy of Sciences that a fully biodegradable material with corn raw starch as raw material was successfully developed by the Institute and passed the expert identification organized by the Department of science and technology of Jilin Province. With this integrated innovative technology, the process is green and environmental friendly, and the products have complete biodegradation characteristics. The overall level is leading in China

with the gradual depletion of oil resources and the increasing pressure of environmental protection, the search for sustainable resources has become one of the themes of the development of human society in the 21st century. Plants convert solar energy into biomass through photosynthesis, and making full use of plant resources is the best way for sustainable development. Jilin Province is located in the golden corn belt and has obvious resource advantages. With corn as raw material, through theoretical innovation and technological integration innovation, the development of fully biodegradable materials and the preparation of disposable consumer products can not only meet people's increasing consumption needs, but also meet the implementation of the development strategy of "corn economy". It is an important measure to promote the adjustment of agricultural planting structure, take the road of "sustainable development" and control "white pollution"

with this goal, the Changchun Institute of Applied Chemistry of the Chinese Academy of Sciences undertook the Jilin Provincial Science and technology development plan project "research and development of starch based fully biodegradable materials" in 2002. After several years of efforts, researchers used raw corn starch as raw material. 1. Functional characteristics of the drop weight impact tester: using water as foaming agent, combined with nanoparticles as foaming nucleating agent, through the optimized combination of screw components of twin-screw extruder and the special structural design of forming mold, foam cushioning packaging materials and disposable lunch boxes with starch content of more than 80% were prepared

according to the introduction, the density of the foam material they prepared is adjustable in the range of 0.04 ~ 0.4g/cm3. The disposable tableware has been tested by the national environmental protection product quality supervision and inspection center and meets the requirements of GB18006.1-1999 "testing conditions for disposable degradable tableware", which requires strong body bearing capacity and other advantages. In addition, the researchers of the Institute also used a new plasticizer and an electromagnetic dynamic film blowing machine to effectively plasticize the starch and realize the blowing film formation of starch. The developed film has good light transmittance and high strength

reprinted from: China chemical industry news

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