Materials Reports  2019, Vol. 33 Issue (z1): 491-494 |
| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Synthesis and Properties of TAP-BPDA Hyperbranched Polyimides |
| CHEN Ying, ZHOU Hongmei, CHEN Deping, MU Dong, WEI Yanhong, YE Yuanxin
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| School of Materials Engineering,Chengdu Technological University, Chengdu 610031 |
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Abstract Aseries of hyperbranched polyimides with different terminated groups were prepared based on BPDA and 2,4,6-triaminopyrimidine (TAP) via a two-step polymerization. The obtained HBPIs’ structures and performance were characterized by Fourier transform infrared spectroscopy(FT-IR), gel permeation chromatography(GPC), thermal gravimetrie analysis(TGA), differential scanning calorimetry(DSC), and so on.The results show that the polyimides with the highest number average molecular weights (Mn) and inherent viscosities would be obtained when the molar ratio of TAP to BPDA was 2∶3. And the glass transition temperatures (Tg) and 5% weight loss temperatures of amine-terminated polyi-mides were higher than that of anhydride-terminated polyimides. All of the polyimides showed excellent solubility in strong polar solvents such as DMF and DMSO, and the solubility of anhydride-terminated polyimides were higher than that of amine-terminated polyimides
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Published: 05 July 2019
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| About author:: Ying Chen was born in 1986, Ph.D., lecturer of Chengdu Technological University. She graduated from Northwestern University of Technology in polymer materials and engineering in 2008 with a bachelor’s degree in engineering. In 2013 graduated from Northwestern University of Technology with a doctorate in polymer che-mistry and physics. From 2014 to 2016, postdoctoral research was carried out in materials science at the University of Electronic Science and Technology. She published more than 20 papers in domestic and foreign journals, of which SCI included 6 articles and 2 articles in one district. She is mainly engaged in the research of polymer modification and processing direction and presided over a Sichuan Provincial Science and Technology Project. |
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