中国塑料 ›› 2008, Vol. 22 ›› Issue (10): 38-41.DOI: 10.19491/j.issn.1001-9278.2008.10.008

• 材料与性能 • 上一篇    下一篇

淀粉/PS-g-MAH共混体系相容性及降解性能的研究

孙晓巍,台立民   

  1. 辽宁工程技术大学材料科学与工程系
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-10-25 发布日期:2008-10-25

Compatibility and Degradation of Starch and MAH-g-PS Blending

SUN Xiao-wei, TAI Li-min   

  1. Department of Material Science and Engineering, Liaoning Technical University
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-10-25 Published:2008-10-25
  • Contact: SUN Xiao-wei

摘要: 研究了淀粉/马来酸酐接枝聚苯乙烯(PS-g-MAH)共混体系的相容性及降解性能。采用红外光谱对接枝产物进行了表征,并用滴定法测定了产物的接枝率,结果表明MAH与PS发生了接枝反应。SEM分析表明当PS/MAH=95/5时,淀粉/PS-g-MAH共混体系的相容性最好,接枝率达到最大,为2.27 %。最后,对淀粉/PS和淀粉/ PS-g-MAH共混体系的降解性能进行了比较,结果表明40 d后淀粉/PS-g-MAH共混物的降解率为20.09 %,小于淀粉/PS共混物的降解率。

关键词: 淀粉, 马来酸酐接枝聚苯乙烯, 相容性, 接枝改性, 降解性能

Abstract: In this article, the compatibility and degradable performance of blends of starch/PS-g-MAH were studied. The grafting product was characterized by infrared spectra. Content of MAH in product was determined by titration. It is showed that PS-g-MAH was produced. The influence of different contents of MAH to the compatibility of starch/PS was analyzes by SEM. Experiments show that, adding MAH can significantly improve the compatibility between starch and PS, When PS/MAH=95/5, the graft rate achieved the best value 2.27%. The degradable performance of pure starch/PS and starch/MAH-g-PS samples was compared. The degradation rate of starch/PS-g-MAH blending was 20.09 % after 40 d, less than starch/PS.

Key words: starch, maleic anhydride grafted polystyrene, compatibility, grafting modification, degradation