摘要
采用静电纺丝技术制备了热塑性聚氨酯弹性体(TPU)纳米纤维膜,并通过"Biscrolling"的方法制备高弹性过渡金属碳化物/氮化物(Ti_(3)C_(2)Tx MXene)改性TPU纳米纤维纱线。通过SEM、电阻测试、传感性能测试等对复合纳米纤维纱线进行结构和性能表征。结果显示,随着MXene负载量的增加,复合纱线的强度先增加后降低,断裂伸长率可达459%以上,展现出优异的弹性和弹性回复性;MXene片可在纳米纤维纱线表面及内部形成连续导电薄膜,赋予复合纱线较好的导电性[电阻(76±16)Ω/cm]。纱线的应变传感性能测试表明,MXene/TPU纳米纤维纱线的传感系数可高达477.86,线性度高达0.995,高于绝大多数文献报道的纱线传感器,并且在监测人体的各种运动状态上展现出较好的应变传感性能。
TPU nanofiber membranes were firstly prepared by the electrospinning technique,and Ti_(3)C_(2)Tx MXene/TPU nanofiber yarns were fabricated by the“Biscrolling”method.The obtained composite nanofiber yarns were characterized by SEM,electrical resistance test,sensing performance test and other techniques.The results showed that the tensile strength of the composite yarn was firstly increased and then decreased with the loading of MXene,and the breaking strain was more than 459%,demonstrating good elasticity.In addition,continuous and conductive MXene film can be constructed on the inner and outside the yarn,rendering the composite yarn with low electrical resistance[(76±16)Ω/cm].The strain sensing performance of the composite yarns were also investigated,and the results revealed that MXene/TPU nanofiber yarns had the gauge factor and linearity of 477.86 and 0.995,respectively,which were higher than that of most of yarn strain sensors.In addition,the MXene/TPU nanofiber yarns can be used to monitor various motion states of human body.
作者
郑贤宏
胡侨乐
聂文琪
王宗乾
李长龙
夏文
ZHENG Xianhong;HU Qiaole;NIE Wenqi;WANG Zongqian;LI Changlong;XIA Wen(School of Textile and Garment,Anhui Polytechnic University,Wuhu 241000,Anhui,China;College of Chemistry,Chemical Engineering and Biotechnology,Donghua University,Shanghai 201620,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2022年第1期80-85,共6页
Fine Chemicals
基金
安徽省自然科学基金(2008085QE213)。
