多功能复合导电毛织物的制备及其性能

为制备多功能复合导电织物,将羧基化碳纳米管(NWCNTs-COOH)和聚吡咯(PPy)逐层交替沉积在毛织物表面。借助数字万用表测试不同工艺条件下所得织物的电导率,优化复合导电毛织物的制备工艺;并对最优工艺下制备的复合导电毛织物的结构、耐洗涤性、抗菌性和表面润湿性进行研究。结果表明:羧基化碳纳米管分散液质量浓度为1.0 mg/mL,吡咯溶液浓度为1.00 mol/L,六水合三氯化铁溶液浓度为1.00 mol/L,氧化聚合时间为30 min,氧化聚合温度为0 ℃,组装次数为5时,复合导电毛织物的导电性能相对最优,电导率达到110 S/m左右;羊毛表面覆盖有MWCNTs-COOH/PPy多层膜,经10次洗涤后织物电导率下降至98.8 S/m,耐洗性良好;该复合导电毛织物对大肠杆菌和金黄色葡萄球菌具有明显的抑制能力,且疏水性有所提高。

Preparation and properties of multifunctional composite conductive wool fabric

Multifunctional conductive wool fabric was successfully prepared by alternatively depositing carboxylic multi-walled carbon nanotubes (MWCNTs-COOH) and polypyrrole (PPy) on the charged surface of wool fabric. The influence of experimental conditions on the conductivity were determined using digital multimeter, and the structure, wash resistance, antibacterial property and water repellent property of composite conductive wool fabric prepared under the relatively optimal conditions were investigated. The results show that when the concentration of MWCNTs-COOH, PPy and FeCl₃·6H₂O are 1.0 mg/mL, 1.00 mol/L and 1.00 mol/L, respectively, the reaction time of oxypolymerization is 30 min, the temperature of oxypolymerization is about 0 ℃ and the number of assembly bilayers is 5, composite conductive fabric with the electrical conductivity around 110 S/m exhibits better conductive properties. The surface of wool fabric is covered by MWCNTs-COOH/PPy multilayers. The conductivity can reach 98.8 S/m after washing for 10 cycles, showing that the composite conductive wool fabric has good washing resistance. Besides, the composite fabric possesses a collection of various functions such as antibacterial property and water repellent properties.