Polyvinylidene fluoride (PVDF) was used as the spinning solute,and N,N-dimethyl formamide (DMF) and tetrahydrofuran (THF) were used as the mixed solvent to prepare spinning solutions with different concentrations and solvent ratios,and then PVDF nanofiber membranes were obtained by electrostatic spinning technique.By scanning electron microscope (SEM),optical contact angle measuring instrument and ImageJ software,the microscopic topography,hydrophobic properties and fiber diameter of the manufactured nanofiber membranes were analyzed,and the effects of different concentrations and different solvent ratios on the nanofiber membranes were studied.The results showed that when the solution concentration was 10% (PVDF mass fraction) and the DMF/THF solvent ratio was 3/2,the nanofiber membrane fibers prepared by electrostatic spinning exhibited good morphology,uniform diameter distribution,and excellent hydrophobicity.
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基金资助
国家自然科学基金(51865055和52161017)
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