Synthesis and Characterization of Copolyimides from s-BPDA/i-BPDA with Different Molar Ratio

Abstract

Abstract: A series of organosoluble copolyimides was successfully synthesized from the 2,2′,3,3′-biphenyltetracarboxylic dianhydride(i-BPDA) and 3,3′,4,4′-biphenyltetracarboxylic dianhydride(s-BPDA) with aromatic diamine 4,4′-ODA.The copolyimides were characterized by FTIR, DSC, TGA and DMA. The copo-lyimides hold superior mechanical properties and show improved solubilities, depending on the i-BPDA content. A regular increase of glass transition temperatures and a decrease of inherent viscosities of copolymers with increasing content of i-BPDA were also observed.

Key words: Polyimide, Copolyimide, Biphenyltetracarboxylic dianhydride, Solubility

TrendMD:

WANG Xiang, ZHANG Peng, CHEN Chun-Hai, LI Peng, WANG Dong-Ji, DANG Guo-Dong*. Synthesis and Characterization of Copolyimides from s-BPDA/i-BPDA with Different Molar Ratio[J]. Chem. J. Chinese Universities, 2010, 31(11): 2289.

References

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