Crystal Morphology and Phase Identifications in Poly(aryl ether ketone)s and Their Copolymers. 2. Poly(oxy-1,4-phenylenecarbonyl-1,3-phenylenecarbonyl-1,4-phenylenene)
Crystal Morphology and Phase Identifications in Poly(aryl ether ketone)s and Their Copolymers. 2. Poly(oxy-1,4-phenylenecarbonyl-1,3-phenylenecarbonyl-1,4-phenylenene)
复制标题
聚（芳基醚酮）及其共聚物的晶体形态和相鉴定。
DOI：
--
复制
发表时间：
1994
期刊：
影响因子：
--
通讯作者：
K. Gardner
中科院分区：
文献类型：
--
作者：
R. Ho;Stephen Z. D. Cheng;H. P. Fisher;R. Eby;B. Hsiao;K. Gardner
本文研究了三个亚苯基重复单元中含有一个Meta键的聚（氧-1，4-亚苯基羰基-1，3-亚苯基羰基-1，4-亚苯基）[PEKK（I）]的晶体结构和形态。基于WAXD和电子衍射（艾德）实验，仅发现一种晶型。晶胞参数为a= 0.766 nm，B= 0.611 nm，c= 1.576 nm的双链正交晶格。特别有趣的是，c轴含有三个亚苯基。通过我们的形态学观察，在大多数薄膜中，层状晶体都是边对边的。晶体生长方向为沿着b轴，a轴垂直于薄膜表面
The crystal structure and morphology of poly(oxy-1,4-phenylenecarbonyl-1,3-phenylenecarbonyl-1,4-phenylene) [PEKK(I)] containing one meta linkage in the three phenylene repeat units have been studied. Only one crystal form was found based on WAXD and electron diffraction (ED) experiments. The crystal unit cell possesses a two-chain orthorhombic lattice with a= 0.766 nm, b= 0.611 nm, and c= 1.576 nm. It is particularly interesting that the c-axis contains three phenylene groups. Through our morphological observations, lamellar crystals are edge-on in most thin films. The crystal growth direction is along the b-axis, and the a-axis is perpendicular to the film surface