高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (10): 1637.

• 论文 • 上一篇    下一篇

聚环氧氯丙烷聚氨酯/聚(甲基丙烯酸甲酯-苯乙烯)IPN的研究

陈宝铨, 韩孝族, 郭风春   

  1. 中国科学院长春应用化学研究所, 长春, 130022
  • 收稿日期:1994-10-19 修回日期:1995-04-12 出版日期:1995-10-24 发布日期:1995-10-24
  • 通讯作者: 韩孝族
  • 作者简介:陈宝铨,男,26岁,博士研究生.
  • 基金资助:

    国家自然科学基金

Studies on Polyepichlorohydrin-Based Polyurethane/ Poly(MMA-co-St)IPNs

CHEN Bao-Quan, HAN Xiao-Zu, GUO Feng-Chun   

  1. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022
  • Received:1994-10-19 Revised:1995-04-12 Online:1995-10-24 Published:1995-10-24

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被引次数

2

摘要： 改变聚(甲基丙烯酸甲酯-苯乙烯)(P(MMA-co-St)中甲基丙烯酸甲酯的含量(WMMA),通过一步法合成出聚环氧氯丙烷聚氨酯(PU(PECH)/P(MMA-co-St)IPN.DSC、TEM和动态粘弹谱研究结果表明:当P(MMA-co-St)中WMMA大于0.6时,IPN仅有一个Tg;当WMMA小于0.4时,IPN有2个Tg,TEM上出现相区,P(MMA-co-St)溶度参数(δ)及δ的氢键作用分量(δh)与相态、力学性能有密切关系。

关键词: 互穿聚合物网络, 聚氨酯, 聚(甲基丙烯酸甲酯-苯乙烯), Tg, 相态

Abstract: Interpenetrating polymer networks of polyepichlorohydrin-based polyurethane/ploy(MMA-co-St)have been prepared with simultaneous method by changing the weight fraction of MMA(WMMA)in copolymer of MMA with styrene. The IPNs have been studiedby DSC,TEM and dynamic mechanical spectroscopy(DMS).The results show that the IP-Ns have only one Tgwhen WMMAis greater than 0.6 But when WMMAis less than0.4, theIPNs have two Tgs, and phase separation is observed on TEM. The phenomenon is ex-plained according to the solubility parameters(δ)and the fraction of hydrogen bond(δh) of P(MMA-co-St).The study reveals that there is a close correlation among the δ,domain sizeand mechanical properties of PU(PECH)/P(MMA-co-St)IPN.

Key words: Interpenetrating polymer networkes, Polyurethane, Poly(MMA-co-St), Tg, Morphology

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