Lowly loaded carbon nanotubes induced high electrical conductivity and giant magnetoresistance in ethylene/1-octene copolymers
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- 作者：Xingru Yana ; Junwei Gub ; 1 ; gjw@nwpu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Guoqiang Zhengc ; Jiang Guoa ; Alexandra Maria Galaskaa ; Jingfang Yud ; Mojammel Alam Khane ; Luyi Sund ; David P. Younge ; Qiuyu Zhangb ; Suying Weif ; suying.wei@lamar.edu" class="auth_mail" title="E-mail the corresponding author ; Zhanhu Guoa ; zguo10@utk.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：Giant magnetoresistance ; Electrical conductivity ; Surface gelation
- 刊名：Polymer
- 出版年：2016
- 出版时间：26 October 2016
- 年：2016
- 卷：103
- 期：Complete
- 页码：315-327
- 全文大小：4982 K
文摘
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Copolymer nanocomposites were prepared by coating carbon nanotubes on the surface of gelated polymer pellets.
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Electrical conductivity was observed to depend on the pressing temperature and CNT loading level.
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Variable range hopping (VRH) mechanistic study revealed a 3-d electron transport mechanism.
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Both unique positive and negative magnetoresistance (MR) phenomena were observed and analyzed by two different models.