摘要
采用线性螺旋金属丝取代传统的针式纺丝喷头,利用静电纺丝方法制备了聚丙烯腈(PAN)纳米纤维。通过添加四正丁基溴化铵调节了纺丝液的电学性能。观察了纺丝过程中纺丝电流大小及射流运动轨迹,并对所纺纤维形貌及力学性能进行了表征与测试。实验结果表明,当四正丁基溴化铵的质量浓度为1.5%,纺丝电流大小为0.15~0.25mA时,射流的飞行轨迹从发散型变成集束型,射流集束现象明显,纤维取向度较好;纤维平均直径为920nm,纤维拉伸强度提高了近4倍。
PAN nanofibers were produced by electrospinning technology.Spiral coils were adopted to replace the traditional spinning needles in this equipment.The spinning solution electrical properties were adjusted by adding the tetrabutyl ammonium bromide（TBAB）.The current value and the motion track of spinning jet during the spinning process were observed,the fiber morphology and the mechanical properties of fiber membranes were measured.The results showed that,when the content of TBAB was 1.5 wt%,the value of microcurrent was 0.15～0.25 mA,the motion track of spinning jet was changed from diffuse type into clustered type,the spinning jet gathered clearly,the fiber orientation was better than others.The average diameter of fibers was 920 nm,and the strength of the membranes was improved four times.
出处
《化工新型材料》
CAS
CSCD
北大核心
2017年第11期217-220,共4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)
江苏高校优势学科建设工程资助项目
关键词
静电纺丝
线性螺旋
多射流
高取向度
electrospinning, spiral coil, multi-jet, highly orientation
