碱处理/吡咯沉积制备聚酯导电纤维

Preparation of conductive PET fibers by alkali treatment and polypyrrole deposition

在聚吡咯沉积于聚酯纤维前用碱溶液对纤维进行处理,制备得到聚吡咯/聚酯(PPy/PET)导电纤维。通过扫描电镜(SEM)和磨损实验分析了聚吡咯导电层的均匀度和牢靠度,结果表明,碱处理过程可以提高导电层的均匀度和与基体间的黏结力,导电性能也得到提高。通过DSC、TG、DMA等热分析实验研究了碱处理和聚吡咯沉积对聚酯纤维结构和性能的影响,结果表明:碱处理导致聚酯纤维的结晶度下降,玻璃化转变温度上升;聚吡咯沉积可以提高聚酯纤维的耐热性能。同时,还优化了聚酯纤维的碱处理条件。

PPy/PET conductive fibers were prepared by conducting alkali-treatment before pyrrole liquid- phase deposition polymerization. The uniformity of the coatings and bonding strength were investigated by SEM and wear testing, and it was found that the alkali-treatment can improve the uniformity and bonding strength of coatings, and the electrically conduct capability was also improved. Influence of alkali-treatment and polypyrrole deposition on PET fibers＇ structure and performance were examined by using DSC, DMA and TG. The experimental results showed that fibers＇ crystallinity decreased and Tg increased after the alkali treatment; and PPy/PET fibers has better thermal resistance due to the PPy coatings. At the same time, this research also optimized the process conditions of alkali-treatment of PET fibers.