PDMS/PVDF静电纺丝膜的制备及油水分离性能研究
Preparation and oil-water separation performance of PDMS/PVDF electrospun membranes
李杰 1路祎祎 1石文天 1郭云杰 1王宇科1
作者信息
- 1. 北京工商大学机械工程系,北京 100048
- 折叠
摘要
利用静电纺丝技术制备具有特殊浸润性表面用于油水分离研究.对比聚偏氟乙烯(PVDF)与聚二甲基硅氧烷(PDMS)不同配比下静电纺丝的成膜效果,并进行性能表征.研究表明,适量的PVDF可以对PDMS起到助纺与增塑的效果,且微球的存在使膜层表现出更好的疏水性.此外,膜层具有的对水高黏附性是受到毛细吸附与静电作用双重影响.当PVDF与PDMS的配比为2∶1时,膜层显示出对油包水乳液良好的选择透过性,水接触角可达150 °,油接触角几乎为0 °,油水分离率在98%以上,是油水分离材料良好的候选物.
Abstract
The PDMS/PVDF membranes with a special wetting surface were prepared for oil-water separation by using an electrospinning technology.The effect of mass ratio of PVDF to PDMS on the membrane-forming performance was investigated.The results indicated that an appropriate amount of PVDF could generate a spinning and plasticizing effect on PDMS,and the presence of microspheres resulted in better hydrophobicity for the membranes compared to those with-out microspheres.Furthermore,the membranes exhibited a high adhesion to water due to a capillary force and electro-static interactions.When the mass ratio of PVDF to PDMS was 2∶1,the membranes showed the optimal hydrophobicity with a water contact angle up to 150 ° and an oil contact angle closed to 0 °.The separation rate of the membranes for wa-ter-in-oil emulsions was more than 98%.This makes the membranes developed in this work a good candidate as an oil-water separation material.
关键词
静电纺丝/聚二甲基硅氧烷/聚偏氟乙烯/油水分离Key words
electrospinning/polydimethylsiloxane/polyvinylidene difluoride/oil-water separation引用本文复制引用
基金项目
国家科技计划项目申报中心重点研发计划(2022YFC2406004)
国家自然科学基金(51975006)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据