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摘要
系统地研究了聚合物浓度、溶剂选择与外加电压等参数条件对静电纺丝纤维形貌的影响。用扫描电子显微镜观察评价了膜纤维的形貌,并通过力学性能、亲水角度、纯水通量和孔隙率测试对膜进行表征。测试结果表明,当聚偏氟乙烯(PVDF)质量分数为12%,溶剂质量比DMAC∶ACE=6∶4,外加电压正压为20kV、负压为-7kV时,制备的静电纺丝纳米纤维膜抗拉伸强度为3.680MPa,具有优异的力学性能;孔隙率为72.52%,纯水通量为82.93L/(m2·h),制备出了形貌良好、透水性能优异的PVDF膜。
Abstract
The influence of polymer concentration,solvent selection,and applied voltage on the morphology of electrospinning fibers were systematically studied.Scanning electron microscopy (SEM) was used to observe and evaluate the morphology of the membrane fibers.Moreover,the mechanical properties,hydrophilic angle,pure water flux,and porosity of the membrane were further characterized by related tests.The results showed that,when the concentration of polyvinylidene fluoride (PVDF),the solvent,the applied voltage were 12%,DMAC∶ACE=6∶4,and 20-7kV,respectively,the tensile strength,porosity and pure water flux of the electrospinning nanofiber membrane were 3.680MPa,72.52%,and 82.93L/(m2·h),respectively,which indicated that this membrane possessed excellent mechanical properties,morphology,and water permeability.
关键词
静电纺丝
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工艺参数
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纤维膜
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聚偏氟乙烯
Key words
electrospinning
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process parameters
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fiber membrane
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PVDF
良好形貌PVDF静电纺丝膜的制备及性能分析[J].
化工新型材料, 2022, 50(11): 78-82 DOI:10.19817/j.cnki.issn1006-3536.2022.11.015
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