期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 279, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.seppur.2021.119720
关键词
Nanofibrous membrane; Gravity-driven filtration; Electrospinning
资金
- Chung Yuan Christian University
- Ministry of Science and Technology of Taiwan [MOST 106-2628-E-033-002-MY3]
This study investigated the use of highly porous nanofibrous membranes prepared through electrospinning of PMMA/PDMS for gravity-driven separation of oil-rich emulsions. The composite membranes showed high separation efficiency for various oil-rich emulsions, making them a promising material for effective and fast gravity-driven filtration.
Emulsions are very challenging to separate due to their small droplet size. Recent attention has been drawn to gravity-driven filtration using membranes due to their simple, easy and yet efficient way of separating emulsions. To achieve this, membranes with high porosity and high selectivity must be prepared. Nanofibrous membranes prepared through electrospinning are recently being explored for their excellent bulk properties such as high porosity and tunable wettability. In this study, a fluorine-free hydrophobic/oleophilic matrix was fabricated through electrospinning of the blend poly(methyl methacrylate)/ polydimethylsiloxane (PMMA/PDMS) to form highly porous nanofibrous membranes for gravity-driven separation of oil-rich emulsions is first investigated. The combination of high porosity (77.6%), large pore size (5.8 mu m), and high hydrophobicity (154 degrees) of the composite membranes (PMMA blended with 60 wt% PDMS) allowed it to breakdown and separate a variety of oil-rich emulsions such as water-in-hexane, water-in-hexadecane, water-in-diesel, and water-in-soybean with separation efficiency of 99.0%, 99.5%, 99.25% and 97.75%, respectively. The presence of methyl groups endowed the membrane with the ability to efficiently repel water droplets from passing through the membrane thus, allowing the successful breakdown of complex oils (although at a slower permeation rate). All aspects considered, PMMA/PDMS nanofibrous membrane appear to be a promising material for effective and fast gravity-driven filtration of oil-rich emulsions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据