壳聚糖-SiO_(2)气凝胶/纤维素/聚丙烯复合水刺材料的制备及其吸附染料性能  

Preparation of chitosan-SiO_(2)aerogel/cellulose/polypropylene composite spunlaced nonwovens and adsorption dye performance

作　　者：肖昊 孙辉[1,2] 于斌 朱祥祥[1,2] 杨潇东 XIAO Hao;SUN Hui;YU Bin;ZHU Xiangxiang;YANG Xiaodong(College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou,Zhejiang 310018,China;Zhejiang Provincial Innovation Center of Advanced Textile Technology,Shaoxing,Zhejiang 312000,China)

机构地区：[1]浙江理工大学纺织科学与工程学院(国际丝绸学院),浙江杭州310018 [2]浙江省现代纺织技术创新中心,浙江绍兴312000

出　　处：《纺织学报》2024年第2期179-188,共10页Journal of Textile Research

基　　金：浙江省自然科学基金项目(LTGS23E030005);浙江省“高层次特殊人才支持计划”科技创新领军人才项目(2021R52031)。

摘　　要：为制备用于有机染料废水处理的生物质材料,以纤维素纤维/聚丙烯(CF/PP)为基材,经氧化后与以壳聚糖(CS)和硅酸四乙酯(TEOS)为原料制备的CS-SiO_(2)混合溶液进行反应,再通过冷冻干燥得到CS-SiO_(2)气凝胶/氧化纤维素(OCF)/PP复合水刺非织造材料。对复合材料的形貌、结构和其对有机染料吸附性能进行测试与表征,结果表明:相较于CF/PP水刺非织造材料,CS-SiO_(2)气凝胶/OCF/PP复合水刺非织造材料表面出现明显的微孔结构,在OCF/PP水刺非织造材料表面出现了归属于CS和SiO_(2)的红外特征峰;当TEOS体积分数为25%时,制得的样品在30℃、pH值为7的条件下对亚甲基蓝(MB)的吸附效率可达99.63%,经5次重复使用后,其对MB的吸附效率仍保持在80.59%左右;相比于CF/PP水刺非织造材料,CS-SiO_(2)气凝胶/OCF/PP复合水刺非织造材料的拉伸强度和断裂伸长率略有下降。Objective The cellulose fiber(CF)spunlaced nonwovens have the advantages of wide availability,low cost,excellent mechanical properties,and large specific surface area.However,as adsorption materials,cellulose and its derivatives have limited potential for intramolecular chain interactions and hydrogen bonding with organic dyes.In order to expand the application of cellulose-based spunlaced materials in the treatment of organic dye wastewater,CF/polypropylene(PP)spunlaced nonwovens with the mass ratio of 9∶1 was used as substrate material and oxidated.Then chitosan(CS)-silicon dioxide(SiO_(2))aerogel was prepared by sol-gel method and loaded on the surface of the oxidated CF(OCF)/PP spunlaced nonwovens to prepare CS-SiO_(2) aerogel/OCF/PP composite spunlaced nonwovens.Method After oxidation,the OCF/PP spunlaced nonwoven fabric was used as the substrate and reacted with a mixed solution of CS and tetraethyl orthosilicate(TEOS)with different volume fractions via the sol-gel method,and then CS-SiO_(2) aerogel/OCF/PP composite spunlaced nonwoven fabric was obtained by freeze drying.The optimal volume fraction of TEOS in the CS-SiO_(2) aerogel/OCF/PP composite spunlaced nonwoven material was determined based on the studies of the morphology,structure,and organic dye adsorption performance of the composite spunlaced nonwovens.Additionally,the mechanical properties of the CS-SiO_(2) aerogel/OCF/PP composite spunlaced nonwoven material were investigated.Results When the volume fraction of TEOS increased to 25%,the pores on the surface of the CS-SiO_(2) aerogel/OCF/PP composite spunlaced nonwoven became smaller and more densely distributed compared to the CF/PP spunlaced nonwovens material,and many micropores generated on the pore walls,providing more adsorption sites for organic dyes.FT-IR characteristic peaks belonging to CS and SiO_(2) appeared on the surface of the OCF/PP spunlaced nonwovens.Compared to the OCF/PP spunlaced nonwovens,the diffraction peaks at 2θ of 14.39°and 17.22°in the XRD pattern of the CS-SiO_(

关 键 词：纤维素纤维/聚丙烯水刺非织造材料 壳聚糖 二氧化硅 气凝胶 有机染料吸附 

分 类 号：TS176[轻工技术与工程—纺织材料与纺织品设计]