A study on the effect of atmospheric-pressure plasma treatment on the hydrophilicity of polyamide-imide fabric mats *

For this study, we investigated the effects of atmospheric-pressure plasma on the hydrophilic properties of polyamide-imide (PAI) fabric mats. PAI fabric mats were treated with atmospheric-pressure plasma. The surface characteristics that underwent different durations of plasma treatment were performed to investigate the effect of plasma treatment on the hydrophilic properties of the PAI fabric mats. FT-IR, X-ray photoelectron spectroscopy, and contact angle analysis were carried out for the verification of the hydrophilicity of the PAI fabric mats after plasma treatment. From the analysis results, the hydrophilicity of the PAI fabric mats increased when the introduction of hydrophilic group by plasma treatment. The concentration of functional groups, including oxygen, and surface roughness of the PAI fabric mats were increased as plasma treatment time increased. Under the atmospheric-pressure conditions, the optimal time of plasma treatment for the PAI fabric mats was approximately 120 seconds.