牵伸倍率对PEDOT-PSS/PVA复合导电纤维结构与性能的影响  

Effect of draw ratios on the structure and properties of PEDOT-PSS/PVA composite fibers

作　　者：许英涛[1] 李昕[1] 李小宁[1] 王锐[1] 杨中开[1] 

机构地区：[1]北京服装学院材料科学与工程学院,北京市服装材料研究开发与评价重点实验室,北京100029

出　　处：《复合材料学报》2012年第3期111-116,共6页Acta Materiae Compositae Sinica

基　　金：北京市科技新星项目(2007B010);国家自然科学基金(20974005);北京市自然科学基金(2102017)

摘　　要：将合成的导电聚(3,4-乙撑二氧噻吩)-聚对苯乙烯磺酸(PEDOT-PSS)与聚乙烯醇(PVA)共混,通过湿法纺丝,得到了电导率较高、力学性能良好、可进行机织的PEDOT-PSS/PVA复合导电纤维,研究了牵伸倍率对纤维导电性能、结构、热性能和力学性能的影响。结果表明:随着牵伸倍率的增加,PEDOT-PSS/PVA复合导电纤维表面的微纤数量增加,结晶性能、热稳定性及力学性能均有所提高;当PEDOT-PSS/PVA复合导电纤维的牵伸倍率为4.0时,其断裂强度、伸长率和初始模量分别为6.74cN/dtex、5.95%和42.43cN/dtex,电导率可达到34.5S/cm,具有良好的应用性能。Composite conductive fibers with high conductivity, good mechanical properties and well- behaved spinnability were obtained by the wet spinning based on poly（3,4 - ethylenedioxythiophene）- polystyrene sulfonic acid （PEDOT- PSS） blended with polyvinyl alcohol（PVA）. The effect of draw ratios on the conductivity, structure, thermostability and mechanical properties of the fibers was investigated. The results show that the number of microfibers on the surface of PEDOT- PSS/PVA composite fiber increases, and its crystallization, thermal stability and mechanical properties are all improved with the increase of the draw ratio. When the draw ratio of PEDOT -PSS/PVA composite fiber is 4.0, its breaking strength, tensile stretch and initial modulus are 6.74 cN/ dtex, 5.95 %and 42.43 cN/dtex, respectively, and its conductivity reaches 34.5 S/cm, which presents a good utility.

关 键 词：聚(3 4-乙撑二氧噻吩)-聚对苯乙烯磺酸 湿法纺丝 复合导电纤维 牵伸倍率 

分 类 号：TB332[一般工业技术—材料科学与工程]