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首页> 外文期刊>Journal of Applied Polymer Science >The skin-core structure of poly(acrylonitrile-itaconic acid) precursor fibers in wet-spinning
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The skin-core structure of poly(acrylonitrile-itaconic acid) precursor fibers in wet-spinning

机译：湿纺过程中聚丙烯腈-衣康酸前体纤维的皮芯结构

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The skin-core structure of poly(acrylonitrile-itaconic acid) [P(AN-IA)] precursor fibers in wet-spinning has been analyzed by the means of electron probe microanalyser (EPMA), scanning electron microscope (SEM), and transmission electron microscope. The numerical solution of Fick's second law equations for diffusion in the nascent fiber was obtained by using the Method of Lines. It has been found that [P(AN-IA)] precursor fiber composed of four parts had remarkable skin-core structure. The sheet-like skin, which was compact and homogeneous, had high crystallization and highly oriented structure. However, the core with low crystallization and some voids was loose, somewhat disorderly and unsystematic. Moreover, the precursor fiber had a pillar-like layered structure along the fiber axis. The average thickness of each layer increased gradually from the skin to the endothecium. Meanwhile, a structural model of PAN precursor fiber has been built. (9 2008 Wiley Periodicals, Inc. J Appl Polym Sci 108: 947-952,2008.
机译：通过电子探针显微分析仪（EPMA），扫描电子显微镜（SEM）和透射光谱分析了湿纺过程中聚（丙烯腈-衣康酸）[P（AN-IA）]前体纤维的皮芯结构。电子显微镜。使用线法获得了Fick第二定律方程在新生纤维中扩散的数值解。已经发现由四部分组成的[P（AN-IA）]前体纤维具有显着的皮芯结构。片状皮肤致密且均匀，具有高结晶度和高度取向的结构。然而，具有低结晶度和一些空隙的核是疏松的，有些无序且不系统。此外，前体纤维沿纤维轴具有柱状的层状结构。从皮肤到内皮，每层的平均厚度逐渐增加。同时，建立了PAN前驱体纤维的结构模型。 （9 2008 Wiley Periodicals，Inc. J Appl Polym Sci 108：947-952,2008。

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