反应挤出淀粉基塑料共混物的研究进展

Research Progress in Production of Starch-based Plastic Blends by Reactive Extrusion Process

目前,淀粉基聚合物共混物的需求量增长速率较低,主要问题是淀粉与其它聚合物聚合时,表现出热力学不混溶性和不润湿性,这些性质使得聚合物的力学性能受到严重地破坏,从而阻碍了淀粉基材料的进一步发展。为了使共混物中的淀粉和其他高分子有更好地相容性,可以人为地增加淀粉的含量以及引入合适的官能团。本文综述了利用反应挤出生产淀粉基聚合共混物(包括生物降解和非生物降解)的一些最有前途的化学反应。

Now, the demand of starch-based polymer blends has lower growth rate than other biodegradable polymers such as polyesters. The main hurdle in the development of starch-based products is the thermodynamic immiscibility and non-wetting of starch with other polymers which leads to serious deterioration of mechanical properties. Higher starch content in the blends and introducing suitable functional groups can improve the compatibility of starch with other polymers in the blend. In this article, the most promising chemical reactions for the reactive extrusion of starch-based polymer blends（biodegradable/non-biodegradable） were reviewed.