Cylindrical brushes of comb copolymer molecules containing rigid side chains

被引:36
作者
Subbotin, A
Saariaho, M
Stepanyan, R
Ikkala, O
ten Brinke, G
机构
[1] Univ Groningen, Polymer Chem Lab, NL-9747 AG Groningen, Netherlands
[2] Univ Groningen, Ctr Mat Sci, NL-9747 AG Groningen, Netherlands
[3] Russian Acad Sci, Inst Petrochem Synth, Moscow 117912, Russia
[4] Helsinki Univ Technol, Phys Lab, Dept Engn Phys & Math Mat, FIN-02015 Espoo, Finland
关键词
D O I
10.1021/ma000252k
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
An analysis of the cylindrical brush of an isolated comb copolymer molecule, consisting of a semiflexible backbone and rodlike side chains, is presented. Using a mean-field approach and a simplyfying assumption, which is tested by computer simulations, we find that the persistence length of the brush, lambda, scales as lambda proportional to L-2/ln L for large values of the side chain length L. In the cylindrical brush regime the order parameter of the rods is negative, implying that the rods orient normal to the cylindrical axis.
引用
收藏
页码:6168 / 6173
页数:6
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