摘要
采用漆酶/2,2,6,6-四甲基哌啶氧化物(TEMPO)体系为催化剂将棉纤维表面的伯羟基选择性氧化成醛基,将丝胶蛋白以席夫碱反应接枝到棉织物上,从而制得具有抗皱性、抗氧化性和抗紫外线性能的多功能丝胶蛋白棉.凝胶电泳(SDS-PAGE)结果显示,漆酶/TEMPO 催化纤维素模型化合物葡聚糖与丝胶蛋白发生交联反应形成高分子量的糖蛋白,红外光谱(FTIR)结果表明在漆酶/TEMPO 体系作用下棉织物被氧化并接枝了丝胶蛋白;棉织物接枝丝胶蛋白的适宜条件为:反应温度为 40℃,时间为 10 h,丝胶蛋白质量浓度为 8 g·L-1.织物的功能性分析结果显示接枝棉具有较好的抗皱性能,折皱回复角可达 162.8°,棉织物抗氧化和抗紫外线性能明显提高.
Abstract
The study aimed at building functional surfaces using sericin to prepare cotton fabric with wrinkle resistance,oxidation resistance and ultraviolet resistance.The primary hydroxyl groups on the cotton surface were first oxidized into aldehyde groups using a laccase/TEMPO system.Sericin was then grafted onto the cotton fabric by Schiff's base reaction.The results of SDS-PAGE show that new glycoproteins with higher molecular weights were formed from the crosslinking reaction with sericin when glucan was used as the model substrate.The results of FTIR spectroscopy show that the cotton fabric was oxidized under the laccase/TEMPO system and sericin was grafted onto the cotton fabric.The optimal reaction conditions were:reaction temperature 40℃,reaction time 10 h and sericin content 8 g·L-1.The grafted cotton exhibits good wrinkle resistance with a wrinkle recovery angle of 162.8°.Meanwhile,the cotton fabric shows better oxidation resistance and ultraviolet resistance.
维普
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