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将化学共沉淀法合成的Co掺杂的Fe_3O_4(Co-Fe_3O_4)磁性粒子和化学氧化法合成的聚苯乙烯磺酸钠(PSS)掺杂的聚(3,4-乙撑二氧噻吩)(PEDOT-PSS)与聚乙烯醇(PVA)混合制备复合纺丝原液,然后经过湿法纺丝得到具有电、磁性能的PEDOT-PSS/Co-Fe_3O_4/PVA复合纤维.通过SEM、FTIR、XRD、TG、VSM以及电导率和机械性能的测试研究了不同牵伸倍率对复合纤维的结构和性能的影响.结果表明,随着牵伸倍率的增加,复合纤维的结晶性能、热稳定性能和机械性能都有所提升,其电导率则成倍增加,而其饱和磁化强度(M_s)则变化不大,约为1.7 A·m~2/kg.当牵伸倍数为4倍时,复合纤维的电导率可达到2.3 S/cm.
Co-doped Fe_3O_4 (Co-Fe_3O_4) magnetic particles synthesized by chemical coprecipitation method and poly (3,4-ethylenedioxythiophene) (PPS) doped with sodium polystyrene sulfonate (PSS) synthesized by chemical oxidation PEDOT-PSS) and polyvinyl alcohol (PVA) to prepare composite spinning dope, and then wet-spinning the PEDOT-PSS / Co-Fe 3 O 4 / PVA composite fiber with electrical and magnetic properties.According to SEM, FTIR, XRD, TG, VSM and conductivity and mechanical properties of the composite fibers were investigated.The results show that with the increase of draft ratio, the crystallization, thermal stability and mechanical properties of the composite fibers The conductivity of the composite fibers increased exponentially while its saturation magnetization (M_s) changed little, about 1.7 A · m ~ 2 / kg. When the draw ratio was 4 times, the conductivity of the composite fibers The rate can reach 2.3 S / cm.