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将聚乙烯醇(PVA)水溶液与聚3,4-乙撑二氧噻吩∶聚对苯乙烯磺酸根阴离子(PEDOT∶PSS)水分散液共混,在不同的纺丝体系温度下,通过湿法纺丝方法制备出PVA/PEDOT∶PSS共混纤维。在制备出PVA/PEDOT∶PSS共混纤维的基础上,探究了纺丝体系温度对共混纤维化学结构、表面形貌、导电性能及拉伸力学性能的影响。借助扫描电子显微镜、红外光谱分析仪、高阻计和电子单纤维强力仪对共混纤维进行测试表征。结果表明:随着纺丝体系温度的升高,制备出的PVA/PEDOT∶PSS共混纤维的导电性能逐渐升高,电导率由1.55S/cm增加到2.39S/cm;制备出的PVA/PEDOT∶PSS共混纤维表面形貌有一定程度改善,纤维表面沟槽数量减少;制备出的PVA/PEDOT∶PSS共混纤维的拉伸强度逐渐升高,断裂伸长逐渐降低。
An aqueous polyvinyl alcohol (PVA) solution is blended with an aqueous dispersion of poly (3,4-ethylenedioxythiophene) poly (p-phenylene sulfonate) anions (PEDOTPSPS) and dispersed at ambient temperature by a wet method PVA / PEDOT: PSS blends were prepared by spinning method. Based on the preparation of PVA / PEDOT: PSS blends, the effects of spinning temperature on the chemical structure, surface morphology, electrical conductivity and tensile properties of blends were investigated. The blends were tested for characterization by means of scanning electron microscopy, infrared spectroscopy, high resistance meter and electronic monofiber strength tester. The results showed that the conductivity of PVA / PEDOT:PSS blends increased with the increase of the temperature of the spinning system, and the conductivity increased from 1.55S / cm to 2.39S / cm. The prepared PVA / The surface morphology of PEDOT:PSS blends improved to a certain degree and the number of grooves on the surface of fibers decreased. The tensile strength of PVA / PEDOT:PSS blends gradually increased and the elongation at break decreased gradually.