P3HB4HB/Ag纳米线复合导电纤维的制备及其性能

Study on preparation and properties of P3HB4HB/AgNWs composite conductive fibers

使用多元醇法制得银纳米线(Ag NWs),并将其与弹性体聚(3-羟基丁酸酯-co-4-羟基丁酸酯)(P3HB4HB)混合,利用湿法纺丝技术,成功制备出P3HB4HB/Ag NWs复合导电纤维。通过热重分析仪、扫描电子显微镜、电阻计及电子单纤强力仪,对复合纤维的表面形貌、导电性能及弹性回复性能进行测试和表征。结果表明,当复合纤维中Ag NWs含量为25.7%时,单根纤维电阻率达到106Ω·cm,满足标准状态下(20℃,65%RH)电阻率小于107Ω·cm的商业化导电纤维的要求;当Ag NWs含量为29.7%时,纤维内部孔洞消失,且纤维在预牵伸范围内具有良好的弹性回复性能。

Silver nanowire （AgNWs） was prepared by polyol method and mixed with elastomer poly （3-hydroxybutyrate- co-4-hydroxybutyrate） （ P3HB4HB）. P3HB4HB/AgNWs composite conductive fiber was successfully prepared via wet- spinning. The morphology,electrical conductivity and elastic recovery properties of composite fibers were tested and characterized by TG,SEM,resistance meter and single-fiber tensile tester. The results showed that when the content of AgNWs was 25. 7 %,the resistivity of single fiber reached 106Ω· cm which meets the requirements of commercially available conductive fibers with the resistivity less than 107 Ω· cm in standard conditions （20 C ,65 % RH）. When AgNWs content was 29.7 %,the internal pores of the composite fibers disappeared. The fibers had a good elastic recovery performance in the pre-drafting range.