等离子体辐照亲水改性再生聚酯纤维及其结构演变

Hydrophilic Modification and Structure Evolution of Atmospheric Plasma Treated Recycled Polyester Fiber

聚酯纤维具有低成本、易加工、力学性能好等优点,是生产、消费量最大的化学纤维之一。然而,聚酯纤维分子表面缺乏活性基团,导致其亲水性与吸湿性差,难以与其他材料复合。文中采用低成本的常压空气等离子体对再生聚酯纤维进行表面亲水处理,系统研究了再生聚酯纤维改性前后亲水性与物理化学结构的变化规律。结果表明,常压空气等离子体处理对再生聚酯纤维表面有一定的刻蚀作用,为其表面引入了羰基等极性含氧官能团;等离子体处理后再生聚酯纤维水接触角从135.9°下降到0°,并且亲水性可保持30 d之久。研究证明,常压空气等离子体处理是对再生聚酯纤维进行表面亲水化改性的有效途径。

Polyester fibers are one of the most produced and consumed chemical fibers due to their advantages of low cost,good processability,and excellent mechanical properties.However,the lack of active functional groups on polyester molecules leads to their poor hydrophilicity and hygroscopicity,which makes them hard to compound with other materials.This work used a low-cost atmospheric plasma treatment for the hydrophilic modification of recycled polyester fibers.The hydrophilicity and physicochemical structure evolution of polyester fibers before and after plasma treatment was systematically studied.The results show that atmospheric plasma treatment has an etching effect on the surface of polyester fibers,and bright abundant polar oxygen containing functional groups like carbonyl.After treatment,the water contact angle of polyester fibers decreass from 135.9°to 0°,which could maintain for over 30 d.This study demonstrates that atmospheric plasma treatment is an easy and feasible method for the surface hydrophilic modification of polyester fibers.