Starch degradation material is expected to control white pollution

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Recently, a completely biodegradable material made from raw corn starch was successfully developed by Changchun Yinghua of the Chinese Academy of Sciences and passed the expert appraisal organized by the Science and Technology Department of Jilin Province. Experts believe that the technology has obvious integration and innovation, the process is environmentally friendly, and the products are fully biodegradable, with the overall level leading domestically. The completion of the project provides practical technologies and fully biodegradable green materials for the high-value utilization of corn starch, which is of great significance in advancing the advantages of corn resources in the province into economic advantages, and the management of “white pollution”. .

In 2002, the Changchun Institute of Applied Chemistry of the Chinese Academy of Sciences undertook the Jilin Province Science and Technology Development Program “Development and Development of Starch-Based Completely Biodegradable Materials”. After arduous efforts, they used corn raw starch as raw material, water as foaming agent, nanoparticle as foam nucleating agent, optimized combination of screw components of twin-screw extruder and special structural design in forming mold, A foam cushioning material and a disposable lunch box having a starch content of more than 80% were prepared. The foam density range is 0.04-0.4g/cm3. Disposable tableware passed the inspection of the National Environmental Protection Product Quality Supervision and Inspection Center and meets the requirements of GB18006.1-1999 (Standard for Testing Degradable Tableware). In addition, they adopted a new type of plasticizer and used an electromagnetic dynamic blown film unit to enable the starch to be plasticized effectively and to achieve blown film formation of starch. The developed film has good light transmittance and high strength.

It is reported that plants convert solar energy into biomass through photosynthesis, and the full use of plant resources is the best way for sustainable development. Using corn as raw material, through theoretical innovation and technological integration and innovation, we have developed completely biodegradable materials and prepared disposable consumer products that can meet people’s increasing consumption needs and meet the “corn economy” development strategy. Agricultural planting structure adjustment, taking the "sustainable development" road, governance "white pollution" important measures.


Reprinted from: China Food Quality News

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