摘要
采用同轴静电纺丝技术,以聚丙烯腈(PAN)溶液为核层、聚苯乙烯(PS)溶液为壳层,制备了PAN@PS复合纳米纤维。研究了纺丝液浓度、溶剂种类对PAN@PS复合纳米纤维形貌和结构的影响。结果表明:PS/四氢呋喃(THF)作为壳层溶液的复合纳米纤维(PAN@PS/THF)可获得相界面清晰的同轴纤维。随PS纺丝液浓度的增加,纤维的直径先增大后有所减小,整体呈现递增的趋势,当PS/THF质量分数为20%时,纤维直径约为693 nm且表面光滑。而以质量分数为20%的PS/二甲基甲酰胺(DMF)为壳层溶液的复合纳米纤维(PAN@PS/DMF)直径有所增加且纤维表面凹凸不平,呈现双相连续的结构。因此,在静电纺丝过程中,可以通过改变纺丝液的参数来调节纤维的形貌和结构。
Polyacrylonitrile(PAN) and polystyrene(PS) composite nanofibers(PAN@PS) were fabricated via coaxial electrospinning technology with PAN solution as core and PS solution as shell. The effect of the concentration of the spinning solutions and properties of the solvents on the morphology and structure of PAN@PS composite nanofibers were investigated. The results reveal that the composite fibers of PAN@PS/tetrahydrofuran(THF) with PS/THF as the shell solution exhibit the coaxial structure with distinct phase interface. With the increase of the shell solution concentration, the diameters of these fibers increase first then fall,but overall appear a trend of increasing. The diameter of the fibers with smooth surface reaches about 693 nm when the mass fraction of PS/THF is 20%. Whereas the fibers of PAN@PS/ dimethylformamide(DMF) with the mass fraction of PS/DMF of 20% present a two-phase continuous structure with uneven surface morphology,and the diameter of the fibers is larger than that of PAN@PS/THF. Therefore,the morphology and structure of the composite fibers can be controlled by varying the electrospinning solution parameters.
作者
高宁
彭应杰
张爱英
叶霖
冯增国
Gao Ning;Peng Yingjie;Zhang Aiying;Ye Lin;Feng Zengguo(School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China)
出处
《合成树脂及塑料》
CAS
北大核心
2019年第3期12-17,共6页
China Synthetic Resin and Plastics
基金
国家自然科学基金资助项目(21774016)
北京理工大学大学生创新训练计划项目(201810007014)
关键词
聚丙烯腈
聚苯乙烯
同轴静电纺丝
形貌
核-壳结构
polyacrylonitrile
polystyrene
coaxially electrospun
morphology
core-shell structure
