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
收藏
页码：1529 / 1535
页数：7
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