Crystalline structure of polyethylene containing vinylene units in the main chain
Crystalline structure of polyethylene containing vinylene units in the main chain
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DOI：
10.1016/j.polymer.2011.08.058
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发表时间：
2011-09-29
期刊：
影响因子：
4.6
通讯作者：
Kurosu, Hiromichi
中科院分区：
文献类型：
--
作者：
Naga, Naofumi;Arai, Rika;Kurosu, Hiromichi
通过反式或顺式聚戊烯（TP或CP）和反式聚辛烯（TO）的部分氢化，合成了主链中含有反式或顺式亚乙烯基单元的聚乙烯。用广角X射线衍射、FT-IR分析、固体NMR测量和NMR化学位移的量子化学计算研究了聚合物的晶体结构。这些结果清楚地表明，平均亚甲基单元数为6.9-8.4/亚乙烯基单元的部分氢化的TP或CP样品不仅形成正交晶体，而且形成类六方晶体。(C)2011爱思唯尔有限公司版权所有。
Polyethylene containing trans- or cis-vinylene units in the main chain has been synthesized by means of partial hydrogenation of trans- or cis-polypentenamer (TP or CP), and trans-polyoctenamer (TO). Crystalline structure of the polymers has been investigated with wide-angle X-ray diffraction, FT-IR analyses, solid-state NMR measurements and quantum chemical calculations of the NMR chemical shifts. These results clear that the partially hydrogenated TP or CP samples having an average number of methylene units of 6.9-8.4 per vinylene unit forms not only orthorhombic crystal but hexagonal-like crystal. (C) 2011 Elsevier Ltd. All rights reserved.