摘要:
采用一种表面存在大量微/纳米裂纹、 横截面为十字型异型纤维的涤棉混纺织物作为基底, 以全氟壬烯氧基苯磺酸钠(OBS)作为掺杂剂, FeCl3为氧化剂, 通过原位化学氧化法制备得到了具有超疏水性能和耐水洗的聚苯胺/涤棉复合导电织物(PANI/CPCCT), 研究了pH对PANI/CPCCT的影响。结果表明, 该导电织物的水接触角最高可达162°, 在碱性条件下仍具有良好的导电性能和疏水性, 并且其颜色也随着pH从1增大至14而发生由墨绿色-蓝绿色-蓝黑色-褐色之间的可逆变化, 其浸润性可快速响应外界酸度的变化, 发生超疏水到超亲水的可逆转变, 具有良好的pH响应性。此外, PANI/CPCCT可耐受弱酸性溶液的洗涤, 并可通过在强酸溶液中浸泡而重复使用, 具有较强的应用性。这些优良的性能, 使其有望在开发酸度控制的浸润性开关、 自清洁织物、 酸度检测等方面获得应用。
Abstract:
Polyaniline-coated conducting polyester and cotton cospinning textile (PANI/CPCCT) was prepared via an in-situ polymerization in the presence of sodium p-perfluorous nonenoxybenzene sulfonate (OBS) as the dopant, FeCl3 as the oxidant and the polyester and cotton cospinning textile (PCCT) with lots of micro/nano-sized gaps on the surface as the substrate. The effect of pH value on the PANI/CPCCT was investigated. It is found that the prepared PANI/CPCCT presents super-hydrophobic function with the biggest water conduct angle of 162?, it also takes on good conductivity and hydrophobicity in alkaline condition. The color and wettability of the PANI/CPCCT present pH-responsive function: its color can reversibly change from dark green to blue green, dark blue, and brown in turn when the pH increases from 1 to 14, and its wettability is reversibly varied from super-hydrophobic to super-hydrophilic induced by a doping and de-doping process of PANI as well. The washing test shows that PANI/CPCCT has a good washability, and its property can be recovered again by being dipped in strong acid solution. All of these superior properties make that the as-prepared PANI/CPCCT can obtain practical utility in acid-controlled wettability switching, self-cleaning textile, acidity detection and other applications.
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