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Novel acetylene-terminated polyisoimides with excellent processability and properties comparison with corresponding polyimides

Authors

  • Heng Zhou,

    1. High Technology Materials Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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  • Feng Liu,

    1. High Technology Materials Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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  • Yongsheng Zhang,

    1. High Technology Materials Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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  • Weifeng Fan,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
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  • Jingfeng Liu,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
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  • Zhen Wang,

    Corresponding author
    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
    • State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
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  • Tong Zhao

    Corresponding author
    1. High Technology Materials Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
    • High Technology Materials Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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Abstract

Two novel acetylene-terminated isoimide oligomers and their corresponding imide oligomers have been synthesized by using trifluoroacetic anhydride or acetic anhydride as dehydrating agent, respectively. Their main structure was confirmed by Fourier transform infrared spectroscopy (FTIR). The isoimide oligomers were amorphous and showed excellent solublility in many common solvents, such as acetone and tetrahydeofuran, whereas the imide oligomers cannot dissolve in them. Differential scanning calorimetry and rheometer were used to study crosslinking behavior and processability of these oligomers. The isoimide oligomers exhibited considerably wider processing window and lower viscosity compared with imide ones. As expected, the isoimide form could be converted to imide form through thermal treatment, which could be demonstrated by FTIR. After the oligomers were cured, the polyisoimides showed similar properties compared with corresponding polyimides. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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