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首页> 外文期刊>Journal of Applied Polymer Science >The suitable itaconic acid content in polyacrylonitrile copolymers used for PAN-based carbon fibers
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The suitable itaconic acid content in polyacrylonitrile copolymers used for PAN-based carbon fibers

机译：用于PAN基碳纤维的聚丙烯腈共聚物中合适的衣康酸含量

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摘要

This article was to provide some new insights into the influences of itaconic acid (IA) content in polyacrylonitrile (PAN) copolymers on polymerization, structural evolution, thermal behaviors and carbon yield relatively comprehensively. High IA containing poly(acrylonitrile-co-itaconic acid) (PAI) oligomers were successfully extracted from PAI copolymers with 2.0 and 3.0 mol % IA. PAI copolymers with 0.5 mol % and 1.0 mol % IA possessed more cyclized structures, conjugated carbonyl group, conjugated nitrile group, and less b-amino nitrile group as well as faster structural evolution rate than those of the other three PAI copolymers. Kinetic parameters indicated that excessive IA content in PAI copolymer did not have advantages in promoting cyclization reaction. The PAI copolymers with 0.5 wt % to 1.0 mol % IA possessed better crystalline parameters as well as higher carbon yield than those of the other two PAI copolymers after carbonization at 1350 degrees C. In summary, PAI copolymers with 0.5 mol % to 1.0 mol % IA will be more suitable for fabricating of high performance PAN-based carbon fibers. (C) 2016 Wiley Periodicals, Inc.
机译：本文旨在对聚丙烯腈（PAN）共聚物中衣康酸（IA）含量相对全面地影响聚合，结构演变，热行为和碳产率提供一些新见解。从具有2.0和3.0 mol％IA的PAI共聚物中成功提取了高IA含量的聚（丙烯腈-衣康酸）（PAI）低聚物。与其他三种PAI共聚物相比，IA含量为0.5 mol％和1.0 mol％的PAI共聚物具有更多的环化结构，共轭羰基，共轭腈基和更少的b-氨基腈基以及更快的结构演化速度。动力学参数表明，PAI共聚物中过量的IA含量没有促进环化反应的优势。在1350℃下碳化后，具有0.5 wt％至1.0 mol％IA的PAI共聚物具有比其他两种PAI共聚物更好的结晶参数和更高的碳收率。总之，具有0.5 mol％至1.0 mol％的PAI共聚物IA将更适合于制造高性能PAN基碳纤维。 （C）2016威利期刊公司

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