高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (8): 1419.

• 研究论文 • 上一篇    下一篇

酸酐化聚砜对聚砜/液晶聚合物共混物的界面增容作用

张军, 何嘉松   

  1. 中国科学院化学研究所, 分子科学中心, 工程塑料国家重点实验室, 北京 100080
  • 收稿日期:2000-06-12 出版日期:2001-08-24 发布日期:2001-08-24
  • 通讯作者: 何嘉松(1944年出生),男,教授,博士生导师,主要从事聚合物共混物及复合材料的研究.
  • 基金资助:

    国家自然科学基金(批准号:59673022);中国科学院王宽诚教育基金

The Interfacial Compatibilization for PSF/LCP Blends by a Maleic Anhydride Modified Polysulfone

ZHANG Jun, HE Jia-Song   

  1. State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080, China
  • Received:2000-06-12 Online:2001-08-24 Published:2001-08-24

摘要: 首先合成了马来酸酐接枝改性聚砜.改性后聚砜材料的表面张力增大,其中的极性分量增加明显,并以此增容聚砜/液晶聚合物(VectraB950)为原位复合体系,研究了增容前后共混物的加工流变行为和界面性能.结果表明,酸酐化聚砜可增强聚砜与液晶聚合物之间的界面作用,引起共混物加工粘度的上升;漫反射FTIR研究表明,增容后共混体系中的特殊相互作用增大;XPS和PLM的研究表明,在熔融加工过程中改性聚砜与液晶聚合物组分之间存在一定的界面化学反应,并生成了接枝共聚物.共混物相容性的提高应归结于相间化学反应与物理作用共同作用的结果.

关键词: 马来酸酐接枝聚砜, 液晶聚合物, 共混物, 界面增容

Abstract: Maleic anhydride-grafted polysulfone(PSF-g-MAH) was prepared. Compared to polysulfone, the surface tension anDIts polar fraction of PSF-g-MAHwere increased by modification. The PSF-g-MAHwas used to compatibilize polysulfone(PSF)/liquid crystalline polymer(LCP) blends. The processabilities and the interfacial properties of PSF/LCPblends before and after compatilization were investigated. It was found that the melt viscosities were increased by the addition of PSF-g-MAH. DRS-FTIRinvestigations showed that the speciaLInteraction between PSFand LCPphases was increased due to the incorporation of PSF-g-MAH. The XPSand PLMstudies revealed that some chemical reactions had occurred between mPSFand LCPphases, which produced PSF-VBcopolymers. It is suggested that the compatibility is attributed to some interactions including both chemical and physical ones. Amodel to illustrate the compatibilization of mPSFin PSF/VBblends has been proposed.

Key words: Maleic anhydride grafted polysulfone, Liquid crystalline polymer, Blends, Interfacial compatibilization

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