聚偏氟乙烯/聚砜纳米纤维滤膜的性能优化研究
Study on Performance Optimization of PVDF/PSU Nanofiber Filter Membranes
何钞 1邓宏凯 2胡梦晗 1王泽瑞 1曹宇 1刘莹 1陈晓昀1
作者信息
- 1. 梧州学院 机械与资源工程学院,广西 梧州 543002
- 2. 贺州学院 校团委,广西 贺州 542899
- 折叠
摘要
以聚偏氟乙烯、聚砜为原料,利用静电纺丝法制备了聚偏氟乙烯/聚砜纳米纤维滤膜,研究铸膜液配方和制备工艺参数对复合膜的力学性能、透气性能和过滤性能的影响.结果表明,聚砜的加入,大大提高了聚偏氟乙烯纳米纤维滤膜的综合性能.当聚偏氟乙烯、聚砜、DMAC 的质量分数分别为 16%、4%、80%时,滤膜的综合性能最好,滤膜的平均接触角、断裂伸长率、平均孔径和气体渗透率分别为 119.54°、35.25%、4.1567 μm和3.59×10-5 m3/(m2·Pa·s);与聚偏氟乙烯纳米纤维滤膜相比,复合膜的平均接触角提高了5.52%,断裂伸长率提高了40.05%,平均孔径下降了33.12%,气体渗透率提高了10.26%.膜内部纤细且丰富的3D贯穿孔隙结构为化学杀菌剂的引入提供更多的载点,可进一步提高复合膜的抗菌性能.
Abstract
uses polyvinylidene fluoride and polysulfone as raw materials to prepare PVDF/PSU nanofiber filter membranes using electrospinning method.The effects of casting solution formula and preparation process parameters on the mechanical properties,breathability,and filtration performance of the composite membrane are studied.The research results indicate that the addition of PSU greatly improves the comprehensive performance of PVDF nanofiber filter membranes.When the content of PVDF,PSUand DMAC is 16wt%,4wt%and 80wt%,respectively,the comprehensive performance of the filter membrane is the best.The average contact angle,elongation at break,average pore size,and gas per-meability of the filter membrane are119.54°,35.25%,and4.1567μM and3.59×10-5 m3/(m2·Pa·s),respectively;Compared to PVDF nanofiber filter membrane,the average contact angle of the composite membrane increased by 5.52%,the elongation at break increased by 40.05%,the average pore size decreased by33.12%,and the gas permeability increased by 10.26%.In addition,the fine and rich 3D porous structure inside the membrane provides more loading points for the introduction of chemical fungicides,which can further improve the antibacte-rial performance of the composite membrane.
关键词
聚砜/聚偏氟乙烯/气体渗透率/静电纺丝/纳米纤维滤膜Key words
PSU/PVDF/gas permeability/electrospinning/nanofiber filter membrane引用本文复制引用
基金项目
广西科技基地和人才专项(2023)(2022AC21171)
广西壮族自治区高等学校中青年教师科研基础能力提升项目(2023)(2023KY0700)
梧州高新区、梧州学院产学研项目(2020)(2020G002)
梧州学院校级科研项目(博士基金)(2021)(2021A002)
自治区级大学生创新训练项目(2021)(202111354228)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据