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首页> 外文期刊>Journal of Polymer Science, Part B. Polymer Physics >Layer structure estimation of three-dimensional crystal and two-dimensional molecular film for fluorinated comb copolymers
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Layer structure estimation of three-dimensional crystal and two-dimensional molecular film for fluorinated comb copolymers

机译：含氟梳状共聚物的三维晶体和二维分子膜的层结构估计

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Comb copolymers containing both hydrogenated and fluorinated side-chains were prepared by copolymerization using acrylic or methacrylic monomers in several ratios. The crystal structures of these copolymers and layer structures of their organized molecular films were investigated by wide-angle X-ray diffraction (WAXD), small-angle X-ray scattering (SAXS), and out-of plane X-ray diffraction. Further, to selectively estimate the regularity of shorter fluorocarbon side-chains, organized molecular films of copolymers were investigated by polarized near-edge X-ray adsorption fine structure (NEXAFS) spectroscopy. From the results of these measurements, it was inferred that these copolymers formed highly ordered layer structures, and a long spacing was predominantly determined by the arrangement of hydrogenated side-chains, except in copolymers having extremely high fluorocarbon contents. In the case of the organized molecular films, the fluorinated side-chains of methacrylate copolymers cannot form a highly ordered arrangement, whereas those of acrylate copolymers were oriented on monolayers. However, in both cases, the hydrogenated side-chains predominantly formed layer structures in the organized films, and the fluorinated side-chains did not contribute to the formation of the layer structures. (C) 2008 Wiley Periodicals, Inc.
机译：使用丙烯酸或甲基丙烯酸单体以多种比例共聚制备含有氢化和氟化侧链的梳型共聚物。通过广角X射线衍射（WAXD），小角X射线散射（SAXS）和平面外X射线衍射研究了这些共聚物的晶体结构及其有组织的分子膜的层结构。此外，为了选择性地估计较短的碳氟化合物侧链的规则性，通过偏振近边缘X射线吸附精细结构（NEXAFS）光谱研究了共聚物的有序分子膜。从这些测量的结果可以推断，这些共聚物形成了高度有序的层结构，并且除了具有极高的碳氟化合物含量的共聚物之外，主要通过氢化侧链的排列来确定长的间隔。在有组织的分子膜的情况下，甲基丙烯酸酯共聚物的氟化侧链不能形成高度有序的排列，而丙烯酸酯共聚物的氟化侧链则定向在单层上。然而，在两种情况下，氢化侧链均主要在有组织的膜中形成层结构，而氟化侧链对形成层结构没有贡献。 （C）2008 Wiley期刊公司

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