Study on synthesis of poly(N-isopropylacrylamide) grafted carbon black and temperature-dependence conductivity of grafted carbon black/epoxy composites

被引：20

作者：

Cheng, Jianguo ^{[1
,2
]}

Wang, Li ^{[1
]}

Huo, Jia ^{[1
]}

Yu, Haojie ^{[1
]}

Yang, Qiang ^{[1
]}

Deng, Libo ^{[1
]}

机构：

[1] Zhejiang Univ, Coll Mat Sci & Chem Engn, State Key Lab Chem Engn, Hangzhou 310027, Peoples R China

[2] Hangzhou Vocat & Tech Coll, Dept Chem Engn, Hangzhou 310018, Peoples R China

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 2008年 / 46卷 / 15期

关键词：

carbon black; conducting polymers; conductivity; nanocomposites; polyamides; SI-ATRP; temperature-responsivity;

D O I：

10.1002/polb.21488

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Carbon black nanoparticle grafted with poly(N-isopropylacrylamide) (CB-g-PNIPAAm) was synthesized by surface-initiated atom transfer radical polymerization (SI-ATRP). The temperature-responsive behavior of CB-g-PNIPAAm was proved by temperature-variable H-1 NMR. A temperature-dependent conductive composite was prepared by blending CB-g-PNIPAAm with epoxy resin. The relationship between temperature and resistivity of the composite was studied: the composite exhibited a negative temperature coefficient (NTC) phenomenon. Possible mechanism for the NTC phenomenon was suggested. The results showed that resultant composites can be used in intelligent temperature-switching. (C) 2008 Wiley Periodicals, Inc.

引用

页码：1529 / 1535

页数：7

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