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Issue 38, 2012
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Temperature-dependent conductive composites: poly(N-isopropylacrylamide-co-N-methylol acrylamide) and carbon black composite films

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Abstract

Innovative temperature-dependent conductive composite materials, poly(N-isopropylacrylamide-co-N-methylol acrylamide)/acid-treated carbon black, poly(NIPAAm-co-NMA)/CB, were prepared. The copolymer of NIPAAm and NMA was synthesized via a random redox copolymerization, and the poly(NIPAAm-co-NMA) copolymer showed thermo-responsive properties. Here, NMA performed a thermal crosslinking function in the copolymer. Carbon black was acid-treated for good dispersion in an aqueous solution. Poly(NIPAAm-co-NMA)/CB composites were obtained by blending various amounts of acid-treated CB into the poly(NIPAAm-co-NMA) aqueous solution, and the films were then post-cured for thermal crosslinking. The properties of the conductive poly(NIPAAm-co-NMA)/CB films such as thermal crosslinking performance, surface resistance, and morphology of the crosslinked composites were investigated. This study demonstrated that the poly(NIPAAm-co-NMA)/CB composites exhibited both temperature-dependent electric resistance and reproducible thermally responsive characteristics. The composites can potentially be applied as new electrical temperature sensor materials.

Graphical abstract: Temperature-dependent conductive composites: poly(N-isopropylacrylamide-co-N-methylol acrylamide) and carbon black composite films

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Article information


Submitted
05 Jun 2012
Accepted
08 Aug 2012
First published
08 Aug 2012

J. Mater. Chem., 2012,22, 20311-20318
Article type
Paper

Temperature-dependent conductive composites: poly(N-isopropylacrylamide-co-N-methylol acrylamide) and carbon black composite films

W. Chuang, W. Chiu and H. Tai, J. Mater. Chem., 2012, 22, 20311
DOI: 10.1039/C2JM33601D

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