纺织品用长效释放生物质精油微胶囊  

Biomass essential oil microcapsules with long period release for textile applications

作　　者：翁佳丽 张维[1,2] 于华 WENG Jiali;ZHANG Wei;YU Hua(College of Textile and Garments,Hebei University of Science and Technology,Shijiazhuang 050000,Hebei,China;Hebei Technology Innovation Center for Textile and Garment,Shijiazhuang 050000,Hebei,China)

机构地区：[1]河北科技大学纺织服装学院,河北石家庄050000 [2]河北省纺织服装技术创新中心,河北石家庄050018

出　　处：《精细化工》2022年第12期2561-2568,2592,共9页Fine Chemicals

基　　金：河北省高等学校科学技术研究重点项目(ZD2020112);河北省重点研发计划项目(20374004D)。

摘　　要：为避免囊壳原料对环境造成危害,选择可降解的乙基纤维素(EC)为壁材,通过溶剂蒸发法制备了薰衣草精油微胶囊。结果表明,搅拌速率对微胶囊粒径和表面微孔有较大影响,当搅拌速率为1200 r/min,EC和精油质量分别为1.0和1.5 g时,微胶囊中值粒径为70.8μm,包封率为44.3%。通过湿法涂层工艺将制备的精油微胶囊用于吸湿透气型涂层织物的制备。SEM表征表明,该方法保留了棉针织物的原形貌。30 d的释放后仍具有39.2%的香味保留率,这得益于胶囊化后精油中乙酸芳樟酯质量分数提高了27.09%,使精油的储存期延长。拉伸-涂层织物表面微胶囊分布均匀、黏覆量多,香味数值可高达382。拉伸和未拉伸制备的涂层织物均具有600 mm/s以上的透气率,水洗5次香气保留率在35%以上,摩擦50次后涂层织物质量保持在96%以上。这种涂层织物的制备方法简单,可以有效改善涂层织物透气性和牢度无法兼具的问题。In order to avoid the harmful impact of capsule raw materials to environment, microcapsules containing lavender essential oil were prepared by solvent evaporation using degradable ethyl cellulose ether(EC) as wall material. The results showed that the stirring rate had a great influence on the particle size and surface micropores of the microcapsules. When the stirring rate was 1200 r/min and the mass of EC and essential oil were 1.0 and 1.5 g, respectively, the median particle size of the microcapsules was 70.8μm and the embedding rate was 44.3%. Then, the microcapsules were used for preparation of hygroscopic and breathable coated fabrics through wet coating process. SEM results showed that this method retained the original shape of the cotton knitted fabric. The fragrance retention rate after 30 days of release was still maintained at 39.2%, which was attributed to the mass fraction of linalyl acetate increased by 27.09% in the encapsulated essential oil prolonging the storage life of the essential oil. The microcapsules were found to be uniformly and massively distributed on the surface of the stretched coated fabric, making the fragrance value as high as 382. The air permeability of the stretched and un-stretched coated fabrics was more than600 mm/s, the fragrance retention rate was more than 35% after being washed for 5 times, and the quality remained >96% after being rubbed for 50 times. The preparation method of the coated fabric is simple and can effectively improve the “trade-off” between air permeability and fastness.

关 键 词：乙基纤维素 香味微胶囊 溶剂蒸发法 湿法涂层 涂层织物 纺织染整助剂 

分 类 号：TS195.5[轻工技术与工程—纺织化学与染整工程]