The Effect of Ionic Liquid on the Electrospinning of PVB in Different Solvents
CHEN Xuewei1,2, LIU Wei1,2,3, GAO Hongda1
1 School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China 2 State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China 3 Tianjin Engineering Center for Safety Evaluation of Water Quality & Safeguards Technology, Tianjin 300387, China
Abstract: In order to study the effect of the addition of ionic liquids on solution properties and products in different solvents, PVB nanofibers were prepared by electrospinning method with PVB as solute and propyl formate and isobutyl acetate as the solvents, respectively. The same additive, N-ethylpyridinium hexafluorophosphate[EPy][PF6], was added to the PVB/propyl formate and PVB/isobutyl acetate solutions respectively to study the effects of the same ionic liquid on the conductivity, viscosity and surface tension of solutions in different solvents. The results show that the change of the properties of the two solutions by adding [EPy][PF6] is mainly due to the increase of conductivity. In the range of 0.1wt%—0.9wt%, the conductivity of the solutions are directly proportional to the amount of ionic liquid added, and the conductivity increase of PVB/propyl formate solution is much higher than that of PVB/isobutyl acetate. Using propyl formate as solvent, ionic liquid can effectively reduce the diameter of the fiber and be used to prepare nanofibers with smaller diameter.
陈雪微, 刘巍, 高洪达. 离子液体在不同溶剂中对PVB静电纺丝的影响[J]. 材料导报, 2020, 34(24): 24160-24164.
CHEN Xuewei, LIU Wei, GAO Hongda. The Effect of Ionic Liquid on the Electrospinning of PVB in Different Solvents. Materials Reports, 2020, 34(24): 24160-24164.
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2020, Vol. 34 
