Synthesis of soluble and thermally stable poly(N‐arylenebenzimidazole)s |
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| Authors: | Yewei Xu Xiangwang Cui Fanghua Zhu Xuan Luo Qiang Yin Lin Zhang |
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| Affiliation: | 1. School of Materials Science and Engineering, Southwest University of Science and Technology, , Mianyang, 621010 China;2. Science and Technology on Plasma Physics Laboratory, Research Centre of Laser Fusion, CAEP, , Mianyang, 621900 China;3. Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology and Research Center of Laser Fusion, CAEP, , Mianyang, 621010 China |
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| Abstract: | Six new bis(benzimidazolyl) monomers containing ether, sulfonyl and ketone groups were synthesized efficiently. A series of poly(N‐arylenebenzimidazole)s were prepared using an aromatic nucleophilic displacement reaction that removed the N–H sites from the novel bis(benzimidazolyl) derivatives with activated aromatic difluorides in sulfolane. The reaction was carried out at 210 °C in the presence of anhydrous potassium carbonate. All resulting polymers showed essentially amorphous patterns. This was consistent with the calculated results. Differential scanning calorimetry and thermogravimetric measurements showed that the polymers had high glass transition temperatures (>240 °C), good thermostability and high decomposition temperatures (>400 °C). These novel polymers also showed easy solubility. © 2013 Society of Chemical Industry |
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| Keywords: | synthesis poly(N‐arylenebenzimidazole)s thermal properties solubility |
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