Improvement of the electromechanical properties of thermoplastic polyurethane composite by ionic liquid modified multiwall carbon nanotubes

被引：11
|
作者：
Xu, Qianwei [1 ]
Zhang, Weijia [1 ]
机构：
[1] Tongji Univ, Sch Mat Sci & Engn, Dept Polymer Mat, 4800 Caoan Rd, Shanghai 201804, Peoples R China
来源：
E-POLYMERS | 2021年 / 21卷 / 01期
关键词：
carbon nanotubes; ionic liquids; thermoplastic polyurethane; dielectric property; electromechanical property; DIELECTRIC ELASTOMERS; PLASTICIZERS; FILMS;
D O I：
10.1515/epoly-2021-0018
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Carbon nanotubes (CNTs) were non-covalently modified by two categories of ionic liquids (ILs), including 1-vinyl-3-ethylimidazole bromide (VEIMBr) and 1-vinyl-3-hexylimidazole bromide (VHIMBr) in the ratio of 1:1 and 1:4, respectively. The surface interaction between CNTs and ILs was well-characterized by FTIR, Raman spectra, XPS, etc. Thermoplastic polyurethane (TPU) containing different amounts of CNTs/ILs was fabricated by melting blending method. TPU-CNTs/ILs composites exhibited simultaneously enhanced electromechanical properties with improved dielectric constant and lowered elastic modulus. The electromechanical sensitivity of sample TPU-3CNT/12VHIMBr increased by approximately 45 times in comparison with that of pure TPU at 200 Hz. Besides, improved dispersion of CNTs/ILs in the TPU matrix was also exhibited.
引用
收藏
页码：166 / 178
页数：13
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