摘要
通过原位自由基溶液聚合法制备了聚(3,4-乙撑二氧噻吩):聚苯乙烯磺酸盐(PEDOT:PSS)/聚(丙烯酰胺-甲基丙烯酸)(P(AAM-MAA))导电水凝胶。采用FTIR、Raman、TGA和SEM分别表征了PEDOT:PSS/P(AAM-MAA)的组成与形貌,测定了PEDOT:PSS/P(AAM-MAA)的透光率、电导率、拉伸性能、力敏性能及传感性能。结果表明:PEDOT:PSS均匀地分散在P(AAM-MAA)水凝胶体系中,使PEDOT:PSS/P(AAM-MAA)具有较好的电导率和透明性(>50%),MAA的引入既提升了PEDOT:PSS/P(AAM-MAA)的电导率,也改善了其拉伸性能和力敏性能。当导电水凝胶中MAA的含量从0wt%增加到2.52wt%时,PEDOT:PSS/P(AAM-MAA)的电导率从0.043 S·m^(-1)增加到0.060 S·m^(-1),其拉伸强度、断裂伸长率分别从46 kPa、76%增长到68 kPa、129%。PEDOT:PSS/P(AAM-MAA)也表现出良好的线性灵敏度(R;>0.983)(应变:0%~70%)。电阻变化曲线表明制备的水凝胶可作为传感器通过电阻信号变化来监测人体的各种微小运动。
In this work,in-situ free-radical solution polymerization method was used to fabricate poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)/poly(acrylamide-co-methacrylic acid)(P(AAM-MAA))conductive hydrogels.The composition and morphology were characterized by FTIR,Raman,TGA,and SEM,respectively.The visible-light transmittance,electrical conductivity,tensile properties,and strain sensitivity were also tested.The results show that PEDOT:PSS is well dispersed in the P(AAM-MAA)hydrogel network,and the hydrogel shows good conductivity and transparency(>50%).The introduction of MAA not only improves the electrical conductivity but also enhances the tensile properties and strain sensitivity of the hydrogel.When the amount of MAA increases from 0 wt%to 2.52 wt%,the conductivity of PEDOT:PSS/P(AAM-MAA)rises from 0.043 S·m^(-1)to 0.060 S·m^(-1),and the tensile strength,elongation at break increases from 46 kPa,76%to 68 kPa,129%,respectively.PEDOT:PSS/P(AAM-MAA)also has demonstrated excellent linear sensitivity(R^(2)>0.983)(strain:0%-70%).The resistance variation curve shows that the prepared hydrogels can be used as sensors to monitor various small movements of human body through the resistance signal change.
作者
孙富昌
潘雨辰
张云飞
刘辉
杜飞鹏
SUN Fuchang;PAN Yuchen;ZHANG Yunfei;LIU Hui;DU Feipeng(School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,China)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2022年第3期1131-1140,共10页
Acta Materiae Compositae Sinica
基金
国家自然科学基金青年项目(51803157)
武汉工程大学大学生校长基金(XZJJ2020060)。
