Improvement of polypyrrole coating adhesion on polyester fabric by atmospheric pressure plasma technology

摘要

In this work, polyester fabric was pre-treated with atmospheric pressure plasma with dielectric barrier discharge method to improve the binding of polypyrrole coating on polyester substrate for improving conductivity. A range of gas mixtures in dielectric barrier discharge and treatment times were employed to investigate plasma induced effect on surface roughness and hydrophilicity. The changes in wettability and morphology were studied by wicking measurements and scanning electron microscopy. Effect of the plasma treatment on binding strength was analyzed by studying abrasion resistance and surface resistivity. It was found that both highest conductivity and strongest interfacial bonding (improved adhesion) were achieved by helium-oxygen plasma pre-treatment. This plasma treatment leads to increase in surface functionalisation of polyester fabric by formation of carboxylic groups on polyester substrate.