Chem. J. Chinese Universities ›› 2016, Vol. 37 ›› Issue (2): 403.doi: 10.7503/cjcu20150443

• Polymer Chemistry • Previous Articles    

Preparation and Properties of Nanocomposites Based on Polyimide and Polyfluorinated Surfactant-pillared Layered Double Hydroxide

GUO Haiquan1,2, MA Xiaoye1, JIN Rizhe1, KANG Chuanqing1, QIU Xuepeng1, GAO Lianxun1,*()   

  1. 1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
    2. University of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2015-06-05 Online:2016-02-10 Published:2019-08-06
  • Contact: GAO Lianxun
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.51373164, 51233001) and the National High Technology Research and Development Program of China(No.2012AA03A211)


Layered double hydroxide was modified with polyfluorinated surfactant via anion-exchange intercalation procedure. The nature of the interlayer anions, the morphology and the thermal stability of the fluorinated LDH(LDH-FS) were investigated by infrared spectrum, X-ray diffraction and thermogravimetry analysis. The interlayer space was expanded from 0.76 nm to 2.52 nm and the microenvironments with polyfluorinate phase were formed. LDH-FS based polyimide(PI) nanocomposites were prepared by the in situ polymerization and characterized. LDH-FS was well dispersed in the polyimide matrix. The gas barred, mechnical and dielectric properties of the LDH-FS/PI nanocomposites were synthetically effected by the exfoliated inorganic nanolayers and polyfluorocarbon chain.

Key words: Polyfluorinated surfactant, Layered double hydroxide, Polyimide, Nanocomposites

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