应用化学 ›› 1996, Vol. 0 ›› Issue (6): 61-63.

• 研究简报 • 上一篇    下一篇

淀粉与木糖醇共混物的性能

于九皋, 郑华武   

  1. 天津大学化学系 天津 300072
  • 收稿日期:1996-02-22 修回日期:1996-07-04 出版日期:1996-12-10 发布日期:1996-12-10

Properties of Starch/Xylitol Blends

Yu Jiugao, Zheng Huawu   

  1. Department of Chemistry, Tianjin University, Tianjin 300072
  • Received:1996-02-22 Revised:1996-07-04 Published:1996-12-10 Online:1996-12-10

摘要: 研究具有环境条件下可降解的塑料已成为国内外专家学者广泛关注的研究课题.淀粉具有类似高聚物的分子结构,但由于分子量大,分子之间的亲合力强,很难加工成型.若采取适当方法降低其分子间的亲合力,使淀粉具有热塑性,则是一种理想的新材料.近年来,使淀粉具有热塑性的研究是此项研究的热点课题.

关键词: 淀粉, 木糖醇, 共混, 热塑性

Abstract: The starch/xylitol blends were extruded in a single extruder.Their properties such as mechanical properties,rheological properties,as well as the effect of components and processing parameters,including the processing time and temperature,on these properties were studied.The activation energy for viscous flow was about 225.1 kJ/mol.The micromophology and crystallinity of the blends have been investigated by scanning electronic microscope and X-ray diffraction method.The result of tests showed that the starch granules were broken and the crystallinity decreased in the blends of starch and xylitol.

Key words: starch, xylitol, blend, thermoplasticity