用常压等离子体射流技术去除不同含湿量的PVA浆料

摘要

Atmospheric pressure plasma jet (APPJ) was employed to desize poly (vinyl alcohol) on cotton fabric. As indicated by weight loss analysis, plasma treatment could effectively remove some of PVA size on cotton fabrics especially for PVA film with 98% RH. Dissolution analysis showed a higher percent desizing ratio (PDR) on PVA sized fabric with 10% RH than that with 98% RH. After 1 min plasma treatment, the fiber suffaee was almost as clean as that of unsized fabric followed by a hot wash at a temperature of 60℃ from SEM pictures. In addition, the hygroscopieity of plasma treated PVA films was improved in the first few minutes but reduced after longer absorption time.%采用常压等离子体射流处理退除棉织物上的PVA浆料.失重数据分析表明,等离子体可以直接剥离织物上的部分浆料,尤其当上浆织物在环境相对湿度(RH)为98%平衡后,等离子体刻蚀效果更明显.溶解结果分析发现,上浆织物在10%RH条件下平衡,经等离子体处理后,水洗退浆率更高.电镜照片显示lmin等离子体处理过再经60℃水洗后的织物几乎跟未上浆织物一样干净.此外,等离子体处理过的PVA薄膜的吸湿性跟未处理相比,先是有所提高,随着吸湿时间延长,反而下降.