静电纺/熔喷醋酸丁酸纤维素复合膜的制备及性能研究  

Preparation and properties of electrospun/melt-blown cellulose acetate butyrate composite membrane

作　　者：陈志军 熊祎 庞蓉蓉 罗鑫 CHEN Zhijun;XIONG Yi;PANG Rongrong;LUO Xin(School of Textile Science and Engineering,Wuhan Textile University,Wuhan 430200;Technical Research Institute of Wuhan Textile University,Wuhan 430200;School of Textile Science and Engineering,Tiangong University,Tianjin 300387)

机构地区：[1]武汉纺织大学纺织科学与工程学院,湖北武汉430200 [2]武汉纺织大学技术研究院,湖北武汉430200 [3]天津工业大学纺织科学与工程学院,天津300387

出　　处：《合成纤维工业》2021年第3期18-22,共5页China Synthetic Fiber Industry

基　　金：纺织纤维及制品教育部重点实验室(武汉纺织大学)开放课题项目(FZXW2017012);农业生态大数据分析与应用技术国家地方联合工程研究中心(安徽大学)开放课题项目(AE201910)。

摘　　要：采用熔喷法及热轧处理制备醋酸丁酸纤维素(CAB)非织造布;然后以体积比64的丙酮与乙酸为溶剂,通过静电纺丝制备CAB纳米纤维并沉积在熔喷CAB非织造布表面,制得静电纺/熔喷CAB复合膜;对复合膜的孔径、过滤效率和透气性进行测试。结果表明:当纺丝溶液CAB质量分数为30%,纺丝电压为18kV,喂液速率为0.2mL/h,接收距离为21cm时,静电纺CAB纳米纤维平均直径及直径变异系数最小,分别为359nm和16.06%;熔喷CAB非织造布的孔径主要分布在10μm左右,对1μm气溶胶粒子的过滤效率为51.393%,在使用∅8喷嘴时透气率为1856mm/s;静电纺/熔喷CAB复合膜的孔径分布在1.7~2.2μm,对1μm气溶胶粒子的过滤效率达96.433%,在使用∅8喷嘴时透气率为735mm/s;相比熔喷CAB非织造布,静电纺/熔喷CAB复合膜的最大孔径、最小孔径、平均孔径均减小,孔径分布区间相对较窄,过滤效率提高,透气率下降。Cellulose acetate butyrate(CAB)nonwovens were produced by melt blowing and hot rolling processes.CAB nanofibers were prepared by electrospinning process in presence of acetone and acetic acid mixture solvent with the volume ratio of 64 and were deposited on the surface of melt-blown CAB nonwovens to prepare electrospun/melt-blown CAB composite membranes.The pore size,filtration efficiency and permeability of the composite membrane were tested.The results showed that the obtained electrospun CAB nanofibers had the minimum average diameter and the coefficient of variation of 359 nm and 16.06%,respectively,when the mass fraction of CAB was 30%in spinning solution,the spinning voltage 18 kV,the liquid feeding rate 0.2 mL/h and the collection distance 21 cm;the pore size of melt-blown CAB nonwovens was mainly distributed at about 10μm,the filtration efficiency for 1μm aerosol particles was 51.393%,and the air permeability was 1856 mm/s while using∅8 nozzles;the pore size of electrospun/melt-blown CAB composite membranes was mainly 1.7-2.2μm,the filtration efficiency for 1μm aerosol particles was 96.433%,and the air permeability was 735 mm/s while using∅8 nozzles;and the maximum and minimum pore size and average pore size of electrospun/melt-blown CAB composite membrane reduced,the pore size distribution range was relatively narrow,the filtration efficiency increased,and the air permeability decreased as compared with those of melt-blown CAB nonwovens.

关 键 词：醋酸丁酸纤维素纤维 静电纺丝 熔喷非织造布 复合膜 过滤性能 透气性 

分 类 号：TQ341+.9[化学工程—化纤工业]