波谱学杂志 ›› 1999, Vol. 16 ›› Issue (5): 461-464.

• 研究论文 • 上一篇    下一篇

结晶PMMA/SAN共混体系的相容性和PMMA结晶行为的NMR研究

易菊珍, 冯汉桥, 陈卫兵   

  1. 中国科学院武汉物理与数学研究所 波谱与原子分子物理国家重点实验室, 武汉 430071
  • 收稿日期:1999-03-04 修回日期:1999-06-16 出版日期:1999-10-05 发布日期:2018-01-13
  • 作者简介:易菊珍,女,1973年出生,硕士
  • 基金资助:
    Project supported by National Natural Science Foundation of China(29874038)

A HIGH RESOLUTION SOLID-STATE NMR STUDY OF MISCIBILITY AND CRYSTALLIZATION BEHAVIOR OF CRYSTALLINE POLY(METHYL METHACRYLATE)(PMMA) WITH POLY (STYRENE-ACRYLONITRILE)(SAN) BLENDS

Yi Juzhen, Feng Hanqiao, Chen Weibin   

  1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071
  • Received:1999-03-04 Revised:1999-06-16 Online:1999-10-05 Published:2018-01-13
  • Supported by:
    Project supported by National Natural Science Foundation of China(29874038)

摘要: 我们用固体NMR方法研究了SAN与结晶PMMA的相容性,并提出了可能的相容性机理;同时我们也研究了PMMA的结晶行为,发现它不同于SMA/PMMA中只存在少量结晶区的PMMA的行为.SAN/结晶PMMA是部分相容的体系,由于PMMA中的羰基与SAN中的苯基的相互吸引才导致共混物相容,且SAN只与无定形PMMA区相容,结晶区可用NMR方法检测到,这说明SAN/PMMA的相容性比SMA/PMMA差,主要原因是SAN与PMMA的相互作用弱于SMA与PMMA的相互作用.交替共聚利于相容.

关键词: 相容性, 结晶, 固体NMR

Abstract: The miscibility of SAN/PMMA blends and the crystallization behavior of PMMA have been studied by NMR means. The results indicate that there exists pronounced crystalline phase in partly miscible SAN/PMMA blends, and most of miscible phase evince the character of interfacial domain. These are different from miscible SMA/PMMA blends.

Key words: Solid-state NMR, Miscibility, Crystallization