中国塑料 ›› 2010, Vol. 24 ›› Issue (05): 48-50 .DOI: 10.19491/j.issn.1001-9278.2010.05.011

• 材料与性能 • 上一篇    下一篇

温度和封端剂马来酸酐对聚碳酸亚丙酯相对分子质量的影响

张光军 蒙昊 陈有业 汪英杰 王红霞   

  1. 内蒙古鄂尔多斯市,内蒙古蒙西高新技术集团有限公司降解塑料分公司
  • 收稿日期:2010-01-05 修回日期:2010-02-27 出版日期:2010-05-26 发布日期:2010-05-26

Effects of Temperature and End-capped Additive Maleic Anhydride on the Viscosity-average Molecular Weight of Poly(propylene carbonate)

CHEN You-Ye   

  • Received:2010-01-05 Revised:2010-02-27 Online:2010-05-26 Published:2010-05-26
  • Contact: CHEN You-Ye

摘要: 考察了加工温度和封端剂马来酸酐(MAH)含量对聚碳酸亚丙酯(PPC)黏均相对分子质量的影响。结果表明,PPC对温度非常敏感,加工温度在120 ℃以上时,其黏均相对分子质量就有很大的下降,温度越高,下降得越多;少量的MAH对PPC的封端作用就很明显,加工温度相同时,MAH的添加量越多,对PPC的封端作用越强,但MAH的添加量不宜超过1 %。

关键词: 聚碳酸亚丙酯, 温度, 封端剂, 马来酸酐, 黏均相对分子质量

Abstract: Effects of processing temperatures and loading of maleic anhydride (MAH) on the viscosity-average molecular weight of poly(propylene carbonate) (PPC) were investigated. When the temperature was above 120 ℃, the viscosity-average molecular weight decreased obviously, and the hither the temperature, the lower the viscosity-average molecular weight . A small quantity of MAH had obviously effect on the end-capping of PPC, at the same processing temperature, the effect on the end-capping increased with increasing content of MAH. However, the loading of MAH should below 1 wt%.

Key words: poly(propylene carbonate), temperature, end-capped additive, maleic anhydride, viscosity average molecular weight