MORPHOLOGY AND STRUCTURE OF SYNDIOTACTIC POLYSTYRENE
MORPHOLOGY AND STRUCTURE OF SYNDIOTACTIC POLYSTYRENE
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DOI：
10.1016/0032-3861(89)90140-7
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发表时间：
1989-04-01
期刊：
影响因子：
4.6
通讯作者：
PETERMANN, J
中科院分区：
文献类型：
--
作者：
GREIS, O;XU, Y;PETERMANN, J
具有高度立构规整性和结晶度的间规聚苯乙烯已被制备成电子可传输薄膜的形式。已通过透射电子显微镜的形态进行了研究。结果是类似的那些为全同立构聚苯乙烯，除了显着更大的层状生长速率。高能电子衍射给出了间同立构聚苯乙烯的以下结构数据：空间群P62 c，a= 26.25（5）A，c= 5.045（8）A，对于α CH 2 α CH（C 6 H 5）α单元，Z= 18，ρ th= 1.033 g cm− 3。大分子主链为平面锯齿形（4 <$11）。三个大分子形成两种类型的手性的簇。这些簇的有序化导致非常明显的超结构（a= α 3a B），但也观察到部分有序化，并且可能是由辐射损伤和/或快速结晶引起的。
Syndiotactic polystyrene with a high degree of stereoregularity and crystallinity has been prepared in the form of thin, electron-transmissible films. The morphology has been studied by transmission electron microscopy. The results were similar to those for isotactic polystyrene except for a significantly larger lamellar growth rate. High-energy electron diffraction gave the following structural data for syndiotactic polystyrene: space group P62c, a= 26.25 (5) A ̊, c= 5.045 (8) A ̊, Z= 18 for the CH 2 CH (C 6 H 5) unit, ρ th= 1.033 g cm− 3. The macromolecular backbone chain is planar zigzag (4∗ 1 1). Three macromolecules form clusters of two types of handedness. Ordering of these clusters results in a well pronounced superstructure (a=√ 3a b), but partial ordering has also been observed and is probably caused by radiation damage and/or rapid crystallization.