乙二醇掺杂对PVA/PEDOT∶PSS导电纤维结构和性能的影响  

Effects of Ethylene Glycol on Structure and Property of PVA/PEDOT∶PSS Conductive Fiber

作　　者：王新月[1,2] 葛明桥[1,2] 冯古雨 

机构地区：[1]生态纺织教育部重点实验室(江南大学),江苏无锡214122 [2]江南大学纺织服装学院,江苏无锡214122

出　　处：《高分子材料科学与工程》2016年第12期65-69,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51503082);中央高校基本科研业务费专项资金(JUSRP11444);教育部创新团队项目(IRT1135);江苏高校优势学科建设工程资助项目

摘　　要：通过湿法纺丝制备聚乙烯醇(PVA)/聚3,4-乙撑二氧噻吩:聚对苯乙烯磺酸(PEDOT∶PSS)共混纤维,为改善共混纤维的导电性能,在PVA/PEDOT∶PSS共混纺丝液中加入乙二醇,制备出掺杂不同乙二醇含量的共混纤维。探究了乙二醇掺杂对PVA/PEDOT∶PSS共混纤维结构和性能的影响,并分析机理。采用红外光谱、原子力显微镜、显微共聚焦激光拉曼光谱仪,高阻计和电子单纤维强力仪对共混纤维的结构和性能进行测试表征。结果表明,随着乙二醇掺杂量的增加,共混纤维电导率逐渐增加,最高达到15.9 S/cm;拉曼光谱显示乙二醇掺杂使PEDOT主链发生苯醌转变,PEDOT的主要特征峰发生红移;红外光谱显示掺杂不改变共混纤维的化学组成;原子力显微镜结果显示随着乙二醇掺杂质量分数的提高,PEDOT与过剩PSS发生相分离,共混纤维表面粗糙度增加;此外,随着乙二醇掺杂质量分数的提高,共混纤维的拉伸强度逐渐升高,断裂伸长逐渐降低。poly（vinyl alcohol） （PVA）/poly（3,4-ethylenedioxythiophene） ： poly （styrene sulfonate） （PEEK）T： PSS） blend fibers were prepared by wet-spinning technique. In order to improve the conductivity of PVA/PEDOT ： PSS blend fiber, various amount of ethylene glycol（EG） was added into the spinning formulation. Then PVA/PEDOT： PSS blend fibers doped with different amounts of EG were successfully fabricated. Effects of EG doping on structure and property of blend fiber were investigated and characterized by FT-IR, AFM, Raman spectrometer, high resistance meter, and fiber tensile strength tester. Results show that as the EG doping content increases, the conductivity of blend fiber increases and reaches 15.9 S/cm; Raman spectroscopy indicates that EG doping makes the PEDOT chain convert from benzoid structure into quinoid structure, and the main Raman characteristic line of PEDOT shifts to red after EG doping; FT-IR spectroscopy shows that EG doping does not change chemical constituents of the blend fiber; AFM indicates that EG doping makes phase separation between PEDOT and excess PSS, which lead to an increase in surface roughness of the blend fiber; in addition, as EG doping contents increase, the tensile strength of blend fiber increase, while the elongation at break decreases.

关 键 词：乙二醇 聚乙烯醇/聚3 4-乙撑二氧噻吩：聚对苯乙烯磺酸纤维 湿法纺丝 

分 类 号：TQ342.33[化学工程—化纤工业]