ELECTRICAL-PROPERTIES OF ANIONICALLY SYNTHESIZED CONDUCTING BLOCK-COPOLYMER FROM THE PRECURSOR POLYSTYRENE-BLOCK-POLY(PHENYL VINYL SULFOXIDE)

被引：17
|
作者：
LEUNG, LM
TAN, KH
机构：
[1] Department of Chemistry, Hong Kong Baptist College, Kowloon, Hong Kong
来源：
POLYMER | 1994年 / 35卷 / 07期
关键词：
ANIONIC POLYMERIZATION; BLOCK COPOLYMER; ELECTRICAL PROPERTIES;
D O I：
10.1016/0032-3861(94)90359-X
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A series of styrene-phenyl vinyl sulfoxide diblock copolymers was prepared using the 'living' anionic polymerization technique. The thermally labile phenyl vinyl sulfoxides undergo an elimination process to yield acetylene moieties at 150-degrees-C. The weight and volume of the iodine-doped conducting fractions were adjusted by changing the length of the styrene block. A sigmoidal composition-dependent conductivity and a maximum in the dielectric constant measurement near the threshold composition suggested a 'percolation-like' conducting process. In addition to electrical measurement, the block copolymers were also characterized by infra-red spectroscopy, thermal analysis, H-1 n.m.r., and size exclusion chromatography.
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页码：1556 / 1560
页数：5
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