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

被引：25

作者：

Huang, Y

Peng, H

Lam, JWY

Xu, ZD ^{[1
]}

Leung, FSM

Mays, JW

Tang, BZ

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

来源：

POLYMER | 2004年 / 45卷 / 14期

关键词：

multidetector size exclusion chromatography; C-60-containing polystyrenes; linear or branched molecular structures;

D O I：

10.1016/j.polymer.2004.04.056

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

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.

引用

页码：4811 / 4817

页数：7

共 45 条

[11] Incorporation of C-60 into poly(methyl methacrylate) and polystyrene by radical chain polymerization produces branched structures [J].