4.6 Article

Smart PDMS sponge with switchable pH-responsive wetting surface for oil/water separation

期刊

NEW JOURNAL OF CHEMISTRY
卷 41, 期 17, 页码 8940-8946

出版社

ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nj01067b

关键词

-

资金

  1. Shanghai university-industry collaboration program [CXY-2014-023]
  2. Scientific and technological achievements transformation program of Jiangsu Province [SBA2014010034]

向作者/读者索取更多资源

A smart sponge with porous structures and switchable hydrophobic-oleophilic or hydrophilic-underwater-oleophobic properties by varying the medium pH is successfully fabricated. This special sponge with a controllable wetting surface is prepared simply by introducing active hydroxyls on the surface of a fabricated poly(dimethylsiloxane) (PDMS) sponge and then esterifying it with picolinic acid. Under the synergistic action of raw PDMS chains and functionalized chains in different media the water contact angles decrease from 138 degrees (pH = 7.0) to 10 degrees (pH = 2.0), whereas the oil contact angles increase from 0 degrees (pH = 7.0) to 140 degrees (pH = 2.0) from neutral or alkaline to very acidic media underwater. The basic structure, chemical components, element type, contact angle and restorability of the sponge are also investigated. Owing to its stability and great practicability, this functionalized pH-responsive sponge can be directly used for oil/water separation. The switchable oil capture and release in aqueous media by our functionalized sponge can provide a new avenue to avoid secondary pollution in oil/water separation processes.

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。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据