Biaxial self-reinforcement of isotactic polypropylene prepared in uniaxial oscillating stress field by injection molding. II. Morphology
Biaxial self-reinforcement of isotactic polypropylene prepared in uniaxial oscillating stress field by injection molding. II. Morphology
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DOI：
10.1002/1097-4628(20001209)78:11
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发表时间：
2000-12
影响因子：
3
通讯作者：
Li-Min Chen;K. Shen
中科院分区：
文献类型：
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作者：
Li-Min Chen;K. Shen
采用扫描电子显微镜 (SEM) 和广角 X 射线衍射 (WAXD) 研究传统注射成型 (CIM) 和振荡填料 IM (OPIM) 等规聚丙烯 (iPP) 的形貌和结晶度。高锰酸蚀后的 SEM 显微照片显示，OPIM 显着的双轴自增强 iPP 样本的外部剪切区域内具有互锁的串状形态，而球晶核心区域则小得多。 OPIM 模制品具有三种晶型：α、β 和 γ 相。 X 射线衍射表明 OPIM 模制品的外剪切区域具有最高的 α 相取向和最大比例的 β 相含量。 © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78：1911–1917，2000
Scanning electron microscopy (SEM) and wide-angle x-ray diffraction (WAXD) are employed to investigate the morphology and crystallinity of isotactic polypropylene (iPP) by conventional injection molding (CIM) and oscillating packing IM (OPIM). SEM micrographs following permanganic etching show an interlocking shish-kebab morphology within the outer shear region and a much smaller spherulitic core region of the pronounced biaxially self-reinforced iPP specimen by OPIM. The OPIM moldings exhibit three crystalline forms: α, β, and γ phases. The X-ray diffraction indicates the highest α-phase orientation and largest proportion of β-phase content in the outer shear region of the OPIM moldings. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 1911–1917, 2000