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Highly Stretchable and Sensitive SBS/Graphene Composite Fiber for Strain Sensors
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-02-24 , DOI: 10.1002/mame.201900736 Wenyue Li 1 , Yanfen Zhou 1 , Yuhao Wang 1 , Ying Li 2 , Liang Jiang 1 , Jianwei Ma 1 , Shaojuan Chen 1
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-02-24 , DOI: 10.1002/mame.201900736 Wenyue Li 1 , Yanfen Zhou 1 , Yuhao Wang 1 , Ying Li 2 , Liang Jiang 1 , Jianwei Ma 1 , Shaojuan Chen 1
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Flexible strain sensors have attracted tremendous interests due to the emergence of intelligent wearable technology. Electrically conductive fibers are desirable candidates for flexible strain sensors, but up til now, there still exist enormous challenges to obtain conductive fibers exhibiting simultaneously high stretchability and high strain sensitivity. This paper introduces a poly (styrene‐butadiene‐styrene) (SBS)/graphene (Gr) composite fiber‐based flexible strain sensor fabricated by a facile and highly scalable wet spinning method. The results demonstrate that the graphene content has significant influence on the morphology, mechanical properties, and electromechanical properties of the composite fibers. The fibers with 5 wt% graphene have a wide response range of up to 100% strain, a high electrical sensitivity with the gauge factor of 10083.98 at 100% strain, and meanwhile, a high level of stability for 2100 stretching–releasing cycles under an applied strain of 20%. Furthermore, the SBS‐5%Gr composite fibers display excellent sensing performance in detecting human upper limb movements at different joints including hand joints, wrist joints, elbow joints, and shoulder joints.
中文翻译：
高应变敏感型SBS /石墨烯复合纤维，用于应变传感器
由于智能可穿戴技术的出现，柔性应变传感器引起了极大的兴趣。导电纤维是挠性应变传感器的理想候选者，但是直到现在，要获得同时表现出高拉伸性和高应变敏感性的导电纤维仍然存在巨大挑战。本文介绍了一种基于聚苯乙烯-丁二烯-苯乙烯（SBS）/石墨烯（Gr）复合纤维的柔性应变传感器，该传感器通过一种简便且高度可扩展的湿纺方法制造。结果表明，石墨烯含量对复合纤维的形态，机械性能和机电性能有显着影响。含5 wt％石墨烯的纤维具有高达100％应变的宽响应范围，在100％应变下具有10083.98的规格系数，具有很高的电灵敏度，同时在20％的应变下2100次拉伸-释放循环具有很高的稳定性。此外，SBS-5％Gr复合纤维在检测人体上肢在不同关节（包括手关节，腕关节，肘关节和肩关节）的运动方面显示出出色的传感性能。
更新日期：2020-03-12
中文翻译：
高应变敏感型SBS /石墨烯复合纤维，用于应变传感器
由于智能可穿戴技术的出现，柔性应变传感器引起了极大的兴趣。导电纤维是挠性应变传感器的理想候选者，但是直到现在，要获得同时表现出高拉伸性和高应变敏感性的导电纤维仍然存在巨大挑战。本文介绍了一种基于聚苯乙烯-丁二烯-苯乙烯（SBS）/石墨烯（Gr）复合纤维的柔性应变传感器，该传感器通过一种简便且高度可扩展的湿纺方法制造。结果表明，石墨烯含量对复合纤维的形态，机械性能和机电性能有显着影响。含5 wt％石墨烯的纤维具有高达100％应变的宽响应范围，在100％应变下具有10083.98的规格系数，具有很高的电灵敏度，同时在20％的应变下2100次拉伸-释放循环具有很高的稳定性。此外，SBS-5％Gr复合纤维在检测人体上肢在不同关节（包括手关节，腕关节，肘关节和肩关节）的运动方面显示出出色的传感性能。
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