文献类型：期刊文献

英文题名：Linear or branched structure? - Probing molecular architectures of fullerene-styrene copolymers by size exclusion chromatographs with online right-angle laser-light scattering and differential viscometric detectors

作者：Huang, Yi[1]; Peng, Han[2]; Lam, Jacky W.Y.[2]; Xu, Zhongde[1]; Leung, Fennie S.M.[2]; Mays, Jimmy W.[3]; Tang, Ben Zhong[2]

机构：[1]E China Univ Sci & Technol, Dept Polymer Sci & Engn, Shanghai 200237, Peoples R China;[2]Hong Kong Univ Sci & Technol, Dept Chem, Inst Nano Sci & Technol, Kowloon, Hong Kong, Peoples R China;[3]Univ Alabama, Dept Chem, Birmingham, AL 35294 USA

年份：2004

卷号：45

期号：14

起止页码：4811

外文期刊名：POLYMER

收录：;EI(收录号：2004288257795);WOS:【SCI-EXPANDED(收录号:WOS:000222283600022)】；

语种：英文

外文关键词：multidetector size exclusion chromatography; C-60-containing polystyrenes; linear or branched molecular structures

摘要：The poly(C-60-co-styrene)s prepared by radical copolymerizations of C-60 and styrene in bulk were characterized by multiple-detector size-exclusion chromatographs consisting of a refractometer, a differential viscometer, and/or a right-angle laser-light scattering photometer. The multidetector systems enabled the determinations of reliable, absolute molecular weights of the copolymers. The plots of intrinsic viscosity vs. molecular weight and radius of gyration vs. molecular weight offered valuable information about the molecular architectures of the copolymers. The slopes of the plots reveal that the structure of the copolymer changes with its C-60 content: the copolymer with a low C-60 content of 0.58 wt% possesses a linear structure, whereas its conger with a high C-60 content of 1.14 wt% possesses a branched structure. (C) 2004 Elsevier Ltd. All rights reserved.