膜
接触角
聚二甲基硅氧烷
化学工程
材料科学
渗透
润湿
色谱法
化学
复合材料
生物化学
工程类
作者
Mengjie Zhang,Wenjing Ma,Shuang Wu,Guosheng Tang,Jiaxin Cui,Qilu Zhang,Fei Chen,Ranhua Xiong,Chaobo Huang
标识
DOI:10.1016/j.jcis.2019.03.099
摘要
The aim of this study is to prepare a fibrous membrane scaffold that possesses a frogspawn structure for high-efficiency oil-water separation. Polyamic acid was first electrospun onto a rotating wheel-collector to obtain the fibrous membrane. Subsequently, post-processing by immersion in a polydimethylsiloxane solution and a silica nanoparticles suspension, followed by a thermal treatment generated a frogspawn-structured fibrous membrane. The obtained membrane achieved superhydrophobicity and superoleophilicity, with the water contact angle as high as 155.75° and the oil contact angle lower than 10°. The separation efficiencies of the membrane were higher than 99.55% and the permeate flux was maintained at greater than 4400 L/m2∙h after 20 separation cycles. Additionally, the wettability studies suggested the membrane exhibits high stability because it can resist damages due to high temperature (150 °C), acid/basic conditions and organic/inorganic solvents. These findings indicated that this composite membrane has great potential for use in gravity-driven oil-water separation and can extend the range of its application for treatments of oil spills incident, oily wastewater and spent liquor.
科研通智能强力驱动
Strongly Powered by AbleSci AI