聚乙烯醇/再生纤维素纳米纤维膜的制备  

Preparation of PVA/Regenerated Cellulose Nanofiber Membrane

作　　者：王红兴 孟家光 王彦杰 陈伟 WANG Hong-xing;MENG Jia-guang;WANG Yan-jie;CHEN Wei(College of Textile Science and Engineering,Xi＇an Polytechnic University,Xi＇an 710048,Shaanxi,China)

机构地区：[1]西安工程大学纺织科学与工程学院

出　　处：《合成纤维》2018年第7期24-26,33,共4页Synthetic Fiber in China

基　　金：国家支撑计划项目(2012BAF13B03);陕西省科技厅2014年科技创新工程计划项目(2014SZ13-Z01);好运来创新研发基金(2014KJ-048)

摘　　要：采用N-甲基吗啉-N-氧化物（NMMO）对废旧涤棉织物中的棉纤维进行溶解回收,通过正交试验优化溶解工艺条件,并利用静电纺丝技术制备聚乙烯醇（PVA）/再生纤维素纳米纤维膜。试验发现影响棉纤维溶解效果的主次因素关系为：溶解温度〉NMMO的质量分数〉二甲基亚砜（DMSO）溶胀时间〉溶质（棉纤维）与溶剂（NMMO水溶液）质量比。溶解的最优条件是：反应温度95℃,NMMO的质量分数为87%,DMSO溶胀90 min,溶质与溶剂质量比为3∶100。此时用扫描电镜观察到PVA/再生纤维素纳米纤维膜中纳米的直径比较均匀。N-methylmorpholine-N-oxide（NMMO） was used to dissolve and recover the cotton fibers in waste polyester/cotton fabrics.Orthogonal experimental method was used to optimize the dissolution process conditions.The polyvinyl alcohol（PVA）/regenerated cellulose nanofiber membrane was prepared by electro spinning.The results show that the primary and secondary factors affecting the dissolution of cotton fiber are： dissolution temperature 〉mass fraction of NMMO 〉swelling time of dimethyl sulfoxide（DMSO） solute（cotton fibers） to solvent（NMMO-H_2O solution） ratio.The optimum conditions for the dissolution are as follows： reaction temperature 95 ℃,mass fraction of NMMO 87%,swelling time of DMSO 90 min,solute to solvent ratio 3∶100.Scanning electron microscopy result shows that the fiber diameter of nanofiber membrane is relatively uniform.

关 键 词：棉纤维 聚乙烯醇纤维 静电纺丝 溶解回收 正交试验 

分 类 号：TQ342.41[化学工程—化纤工业] TQ340.649