基于紫外线照射引发技术,将甲基丙烯酸缩水甘油酯(GMA)光接枝共聚到涤纶针织物和机织物表面,并对两种接枝织物的微观结构与水润湿性进行表征.结果表明:随着单体GMA含量的增加,接枝率增加,随着光敏剂、交联剂含量增加及光照时间的延长,接枝率呈现先增加后降低的趋势;针织物的扁平和变形纤维及织物表面的毛羽效果有利于GMA的吸附和接枝聚合,而机织物的圆形、刚性纤维及紧密堆积结构不利于GMA的吸附和接枝聚合;GMA质量分数为36%时,涤纶针织物的接枝率达83.7%,接枝后针织物的水接触角从125.3°降至77.2°;涤纶织物的纤维形态和纱线的结构决定单体的吸附和接枝效果.%The photografting copolymerization of knitted and woven polyester fabrics with glycidyl methacrylate(GMA)was carried out by ultraviolet irradiation technology.The microstructure and wettability of the two grafted fabrics were characterized. The results showed that the graft yield was increased with the increase of GMA monomer content and was increased firstly and then decreased with the increase of photosensitizer and crosslinking agent contents and the irradiation time as well;the flat and textured fibers and hairiness fabrics of the knitted polyester fabric were conducive to the adsorption of GMA and the grafting pol-ymerization while the circular and rigid fibers and the close-packed structure of the woven polyester fabric restricted the adsorp-tion of GMA and the grafting polymerization;the graft yield of the knitted polyester fabric reached 83.7%and the water contact angle was decreased from 125.3°to 77.2°after grafting when the mass fraction of GMA was 36%; and the fiber morphology and the yarn structure of the polyester fabrics decided the monomer adsorption and the grafting effect.
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