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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and properties of novel poly(benzimidazopyrrolone amide)s containing pyridine moieties
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Synthesis and properties of novel poly(benzimidazopyrrolone amide)s containing pyridine moieties

机译：含吡啶部分的新型聚苯并咪唑并吡咯烷酰胺的合成与性能

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摘要

A series of new poly(benzimidazopyrrolone amide) (PPA) copolymers were synthesized by a two-step procedure, which was the solution polycondensation of a novel pyridine-containing tetraamine with various aromatic dianhydrides at a room temperature and cyclization of the resulting prepolymers at a high temperature, respectively. The resulting prepolymers from the solution polycondensation, that is, poly(amide amino acid)s (PAAAs), had inherent viscosities of 0.82-0.91 dL/g; then, tough and flexible PPA films could be successfully prepared by the casting of the PAAA solutions onto a glass substrate followed by thermal curing with a program temperature procedure up to 350 degrees C. The obtained PPA films exhibited not only excellent thermal properties with onset decomposition temperatures in the range 502-521 degrees C, glass-transition temperatures in the range 299-337 degrees C, and residual weight retentions at 700 degrees C in air of 29.1-34.8% but also good mechanical properties with tensile strengths of 102.1-115.9 MPa and elongations at break of 6.8-7.4%. (C) 2008 Wiley Periodicals, Inc.
机译：通过两步程序合成了一系列新的聚苯并咪唑并吡咯烷酰胺（PPA）共聚物，这是一种新型的含吡啶四胺与各种芳族二酐的溶液缩聚反应，在室温下环化所得的预聚物。高温。由溶液缩聚得到的预聚物，即，聚（酰胺氨基酸）（PAAA），具有的固有粘度为0.82-0.91dL / g。然后，通过将PAAA溶液浇铸到玻璃基板上，然后以高达350摄氏度的程序温度程序进行热固化，可以成功制备坚韧而柔韧的PPA膜。获得的PPA膜不仅表现出优异的热性能，而且开始分解温度在502-521摄氏度范围内，玻璃化转变温度在299-337摄氏度范围内，在700摄氏度空气中的残余重量保持率为29.1-34.8％，而且还具有良好的机械性能，拉伸强度为102.1-115.9 MPa和断裂伸长率为6.8-7.4％。 （C）2008 Wiley期刊公司

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