Highly sensitive strain sensor based on stretchable sandwich-type composite of carbon nanotube and poly(styrene-butadiene-styrene)

被引：15

作者：

Qin, Bing ^{[1
]}

Li, Baobi ^{[1
]}

Zhang, Jie ^{[1
]}

Xie, Xiaoling ^{[1
]}

Li, Wei ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Sch Mat Sci & Engn, Dept Polymer Engn, Taiyuan 030024, Peoples R China

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2020年 / 315卷 / 315期

基金：

中国国家自然科学基金;

关键词：

Elastic polymer; Carbon nanotube; Strain sensor; Composite; CONDUCTIVE POLYMER COMPOSITES; ELECTROMECHANICAL PROPERTIES; LOW-COST; NANOCOMPOSITES; TRANSPARENT; FABRICATION; DURABILITY;

D O I：

10.1016/j.sna.2020.112357

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A highly flexible, stretchable, and sensitive strain sensor based on sandwich-type composite of carbon nanotube (CNT) and poly(styrene-butadiene-styrene) was synthesized. The composite films were characterized by Fourier transform infrared spectroscopy, thermal gravimetric analysis, and scanning electron microscopy. Stress-strain measurements with simultaneous electrical detection were performed to investigate the electromechanical response of the composite films. Result shows that the sandwich-type composite exhibits better response than normal blended ones. In particular, the sandwich-like composite with optimal CNT content (5 wt% in an intermediate layer) has a wide workable strain range (approximately 170 %), high sensitivity (e.g., gauge factor of 260 at 50 % strain and 1734 at 100 % strain), and long-term durability. The response mechanism of the sandwich-type composite was also discussed, and its high sensitivity and good stability indicate its promising application. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：10