聚噻吩与涤纶导电织物的制备及性能研究

Preparation and Preformance of Polythiophene/Polyester Conductive Fabric

以氯仿为溶剂,无水氯化铁为氧化剂,采用原位聚合法制备聚噻吩/涤纶(PTh/PET)导电复合织物。探讨无水氯化铁与噻吩的摩尔比(O/M)、噻吩浓度、聚合温度、时间及盐酸浓度等因素对织物增重率及方阻的影响,优化出PTh/PET复合织物导电性能最佳时的制备工艺:噻吩浓度为0.17 mol/L,O/M比为4:1,20℃氧化聚合20 min,掺杂盐酸浓度为1 mol/L。最佳工艺条件下导电织物增重率为14%,表面方阻为10.4kΩ/。通过扫描电子显微镜、红外光谱及热重对导电织物的表面微观形貌、结构和热稳定性进行表征,并测其耐摩擦性能。结果表明,PTh颗粒均匀覆盖到织物表面,导电织物耐摩擦性能较佳,可经20次干、湿摩擦,导电性能基本稳定。

Polythiophene/polyester （PTh/PET） conductive composite fabric was prepared by the way of in-situ chemical oxidation polymerization, which uses chloroform as solvent and anhydrous ferric chloride as oxidant. The influences of molar ratio of anhydrous ferric chloride to thiophene, thiophene concentration, reaction temperature, reaction time and the concentration of hydrochloric acid on the conductivity and weight gain of PTh/PET composite fabric were analysed. The results showed that when molar ratio of anhydrous ferric chloride to thiophene was 4 ： 1, thiophene concentration was 0.17 mol/L, reaction at 20 ℃ for 20 min with 1 mol/L hydrochloric acid doped, the conductivity was best with the weight gain being 14%, the surface resistance being 10.4 kD./n. Surface morphology and thermal stability of the conductive fabric, polythiophene structure was characterizated by Scanning electron microscopy, TG and Infrared spectroscopy, and abrasion resistance was tested. The results show that PTh particles are coated on the surface of the fabric uniformly, and the prepared conductive fabric had stable abrasion resistance, even after 20 times of dry and wet friction.