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Studies on conductivity of acrylonitrile‐butadiene rubber/LiClO 4 composite and its modification by adding epoxy resin
Author(s) -
Zhang Qian,
Ren Wentan,
Yu Haiyang,
Zhang Yong
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.32060
Subject(s) - epoxy , acrylonitrile , materials science , conductivity , ionic conductivity , lithium perchlorate , composite number , composite material , nitrile rubber , fourier transform infrared spectroscopy , polymer chemistry , natural rubber , analytical chemistry (journal) , polymer , chemistry , chemical engineering , electrolyte , copolymer , organic chemistry , electrode , engineering
Solid polymer electrolytes based on acrylonitrile‐butadiene rubber (NBR) and LiClO 4 were prepared and their conductivity was evaluated. The effect of nitrile group CN/LiClO 4 mole ratio on the conductivity was investigated. The maximum conductivity of 1.21 × 10 −4 S cm −1 (20°C) was achieved in the NBR/LiClO 4 composite at the CN/LiClO 4 mole ratio of 1/2.5, which was in accordance with the strongest coordination between CN and Li + indicated by Fourier transform infrared spectrometry measurement. The conductivity was further increased by two to three times when 30 phr epoxy resin was introduced into NBR, and the conductivity could retain around the maximum value with the CN/LiClO 4 mole ratio ranged from 1/2.5 to 1/3.5, while the conductivity of NBR/LiClO 4 composite existed a decrease in the same range. Field emission scanning electron microscopy and atomic force microscopy characterization showed that epoxy resin significantly improved the dispersion of LiClO 4 , leading to better surface smoothness of NBR/epoxy resin/LiClO 4 composite film and contributing to the increase of ionic conductivity. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010