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Polymer Bulletin

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30-07-2016 | Original Paper

A relationship between electrical conductivity and photodegradation in styrene-butadiene copolymer/multi-wall carbon nanotube composite

Authors: Hisayuki Nakatani, Mayumi Hirooka, Kanae Yamaguchi, Suguru Motokucho, Noriyasu Okazaki

Published in: Polymer Bulletin | Issue 4/2017

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Abstract

An effect of photodegradation on electrical conductivity of a styrene-butadiene copolymer (SBR)/multiwall carbon nanotube (MWNT) composite was studied with a TiO₂/polyethylene oxide/methyl linoleate paint photocatalyst under UV and/or visible light irradiation. An oxidative etching of impurities on the MWNT surface was caused by the UV or visible light irradiation, leading to an increase of quality of MWNT. On the other hand, the photocatalyst addition caused the degradation of MWNT structure. A relationship between the electrical conductivity and MWNT content showed that the MWNT dispersity in a SBR was superior to that in a polystyrene (PS). In addition, the PS addition to SBR matrix caused MWNT aggregation. The electrical conductivity decrease of the MWNT composite was due to electrical percolation structure loss caused by the photocatalyst under the visible light irradiation, and its rate depended on the MWNT dispersity. The PS molecular weight change behavior with the photocatalyst was consistent with the electrical conductivity one of the SBR/MWNT. The photocatalyst ability was estimated from the electrical conductivity of the SBR/MWNT.

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Title: A relationship between electrical conductivity and photodegradation in styrene-butadiene copolymer/multi-wall carbon nanotube composite
Authors: Hisayuki Nakatani
Mayumi Hirooka
Kanae Yamaguchi
Suguru Motokucho
Noriyasu Okazaki
Publication date: 30-07-2016
Publisher: Springer Berlin Heidelberg
Published in: Polymer Bulletin / Issue 4/2017
Print ISSN: 0170-0839
Electronic ISSN: 1436-2449
DOI: https://doi.org/10.1007/s00289-016-1771-7

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