Enhanced dielectric properties of polyamide 11/multi‐walled carbon nanotubes composites. Issue 40 (8th July 2015)

• Record Type: Journal Article
• Authors: Huang, Yongzhong; Tan, Lirong; Zheng, Shaodi; Liu, Zhengying; Feng, Jianming; Yang, Ming‐Bo
• Is Part Of: Journal of applied polymer science. Volume 132:Issue 40(2015)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2015-07-08
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.42642
• Languages: English
• ISSNs: 0021-8995

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <p>Composites with multi‐walled carbon nanotubes (MWNTs) involved in polyamide 11 (PA11) were prepared via a conventional melt blending method. The structure, morphology, crystallization behavior, electrical, and dielectric properties of composites were investigated. The results demonstrated that the dispersed uniformly MWNTs favored the formation of α crystal of PA11 when the composites were quenched from melt. The dielectric constant of composites was dependent on the electric field frequency and MWNTs content, and the highest value of dielectric constant was as high as 350 for the composite with 1.21 vol % MWNTs at 10³ Hz, accompanied by a low dielectric loss. The enhanced dielectric properties could be interpreted by the formation of abundant nanocapacitors within the composites and the interfacial polarization effect resulting from accumulation of charge carriers at the internal interfaces between MWNTs and PA11. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. <bold>2015</bold>, <italic>132</italic>, 42642.</p> </abstract>