高比表面积多孔二醋纤超细纤维的制备研究  

Preparation of cellulose acetate porous ultrafine fiber with high specific surface area

作　　者：张金宁[1] 宋明玉[1] 陈昀 曹建华 杨占平 魏取福[1] 吴洁茹[1] 

机构地区：[1]生态纺织教育部重点实验室(江南大学),无锡214122 [2]南通醋酸纤维有限公司技术中心,南通226008

出　　处：《化工新型材料》2017年第11期212-216,共5页New Chemical Materials

基　　金：江苏省产学研联合创新资金前瞻性研究项目(BY2014023-06);江苏省普通高校研究生科研创新计划项目(KYLX15-1183);江苏高校优势学科建设工程资助项目(PAPD)

摘　　要：借助高挥发溶剂引发的热致相分离原理,以二氯甲烷/丙酮为溶剂,通过静电纺丝技术制备二醋酸纤维素多孔超细纤维。通过正交试验,对影响二醋酸超细纤维比表面积的5个主要因素(溶剂配比、溶液浓度、纺丝电压、接收距离和纺丝速度)在4个水平上进行了优化筛选。以纤维的比表面积为考察目标,获得了最佳纺丝工艺条件:二氯甲烷∶丙酮=7∶3,纺丝速度为1mL/h,接收距离为10cm,纺丝电压为24kV,纺丝浓度为3.5%(质量分数)。在5个因素中,溶剂配比对纤维比表面积的影响最为显著。且经过优化,最终得到了比表面积为(23.1694±0.3256)m^2/g的多孔超细二醋酸纤维。Cellulose acetate porous ultrafine fibers were produced from highly volatile solvent system by electrospinning using DCM/acetone as solvent.The orthogonal design was employed to investigate the influence of five main parameters,including volume ratio of DCM and acetone,solution concentration,spinning voltage,spinning distance and spinning speed,on the specific surface area of fiber through optimizing screening test at four levels.The optimum condition was as follows：V（DCM）∶V（acetone）=7∶3,spinning speed of 1 mL/h,spinning distance of 10 cm,solvent voltage of 24 kV,solution concentration of 3.5 wt%.Among the five factors,the volume ratio of DCM and acetone was the most significant factor to the specific surface area.Finally,under the condition of optimized spinning process,the fiber with specific surface area（23.1694±0.3256）m^2/g was gotten.

关 键 词：静电纺丝 多孔纤维 比表面积 正交试验 

分 类 号：TQ340.64[化学工程—化纤工业]