Highly sensitive and stretchable piezoresistive strain sensor based on conductive poly(styrene-butadiene-styrene)/few layer graphene composite fiber. (February 2018)

• Record Type: Journal Article
• Authors: Wang, Xingping; Meng, Si; Tebyetekerwa, Mike; Li, Yilong; Pionteck, Jürgen; Sun, Bin; Qin, Zongyi; Zhu, Meifang
• Is Part Of: Composites. Volume 105(2018)
• Page Start: 291
• Page End: 299
• Publication Date: 2018-02
• Subjects: A: Graphene -- A: Polymer-matrix composites (PMCs) -- A: Fibers -- B: Electrical properties; Composite materials -- Periodicals; Manufacturing processes -- Periodicals; Composite materials; Manufacturing processes; Periodicals; 620.11805
• DOI: 10.1016/j.compositesa.2017.11.027
• Languages: English
• ISSNs: 1359-835X

Abstract

Abstract: High stretchability and sensitivity are the major desired requirements of strain sensors for wearable electronics applications, especially in health and medical monitoring. Herein, a highly sensitive and stretchable strain sensor based on conductive poly(styrene-butadienestyrene)/few layer graphene (SBS/FLG) composite fiber is fabricated through an easy and scalable wet-spinning process. Owing to the super flexibility of SBS matrix and the excellent electrical and mechanical properties of FLG, the SBS/FLG fiber based strain sensor revealed superior performance, including wide workable strain range (>110%), superior sensitivity (gauge factor of 160 at a strain of 50% and of 2546 at a strain of 100%), and durability. Furthermore, the mechanism behind the excellent performances of SBS/FLG fiber based sensors is discussed in detail.