基于环境响应性棉织物的按需油水分离
On-Demand Oil-Water Separation by Environmentally Responsive Cotton Fabrics.
作者信息
Xiao Meina, Huang Yinghui, Xu Anli, Zhang Tongtong, Zhan Chengdong, Hong Liangzhi
机构信息
Department of Polymer Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.
出版信息
ACS Omega. 2019 Jul 18;4(7):12333-12341. doi: 10.1021/acsomega.9b01235. eCollection 2019 Jul 31.
Environmentally responsive cotton fabrics were fabricated by dip-coating ABC miktoarm star terpolymers, which contain reactive poly(3-triisopropyloxysilylpropyl methacrylate) blocks, hydrophobic poly(dimethylsiloxane) (PDMS) blocks, and hydrophilic poly(,-dimethylaminoethyl methacrylate) (PDMAEMA) blocks. The functionalized cotton fabrics with perfectly alternating PDMS and PDMAEMA blocks show underoil superhydrophobicity and underwater superoleophobicity. The wettability and permeability of the functionalized fabrics can be readily adjusted by the contacting medium. More interestingly, surface reconstruction causes a reduction in the breakthrough pressure of the nonwetting phase. The adaptive permeability endows the functionalized cotton fabrics with the capability to separate heavy oil-water-light oil ternary mixtures.
通过浸涂ABC型三臂星形三元共聚物制备了对环境响应的棉织物，该共聚物包含反应性聚（甲基丙烯酸3-三异丙氧基甲硅烷基丙酯）嵌段、疏水性聚（二甲基硅氧烷）（PDMS）嵌段和亲水性聚（甲基丙烯酸2-二甲基氨基乙酯）（PDMAEMA）嵌段。具有完美交替的PDMS和PDMAEMA嵌段的功能化棉织物表现出油下超疏水性和水下超疏油性。功能化织物的润湿性和渗透性可以通过接触介质轻松调节。更有趣的是，表面重构导致非润湿相的突破压力降低。适应性渗透性赋予功能化棉织物分离重油-水-轻油三元混合物的能力。
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