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Issue 2, 2017
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A strategy for preparing spirobichroman dianhydride from bisphenol A and its resulting polyimide with low dielectric characteristic

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Abstract

A spirobichroman dianhydride (SBCDA) was prepared through oxidation of an octamethyl spirobichroman (OMSBC), which was synthesized from acid-fragmentation of bisphenol A by 3,4-dimethylphenol, followed by Diels–Alder reaction. The reaction mechanism was proposed, and the optimal reaction conditions were discussed. Based on a high temperature solution polymerization of SBCDA and 4,4′-diaminodiphenylmethane (DDM), a spirobichroman-containing polyimide, SBC-DDM, was successfully prepared. Because of the contorted spiro-structure and rigid polymer backbone, SBC-DDM exhibits a large free volume, leading to outstanding organo-solubility and a low dielectric constant. In addition, the resulting film of SBC-DDM shows foldability, a high glass transition temperature, and good thermal stability.

Graphical abstract: A strategy for preparing spirobichroman dianhydride from bisphenol A and its resulting polyimide with low dielectric characteristic

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Publication details

The article was received on 22 Oct 2016, accepted on 29 Oct 2016 and first published on 03 Nov 2016


Article type: Paper
DOI: 10.1039/C6RA25648A
RSC Adv., 2017,7, 1101-1109
  • Open access: Creative Commons BY-NC license
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    A strategy for preparing spirobichroman dianhydride from bisphenol A and its resulting polyimide with low dielectric characteristic

    I. C. Tang, M. W. Wang, C. H. Wu, S. A. Dai, R. J. Jeng and C. H. Lin, RSC Adv., 2017, 7, 1101
    DOI: 10.1039/C6RA25648A

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