Pseudo-zwitterions self-assembled from polycation and anion clusters showing exceptional water-cleanable anti-crude-oil-adhesion property

iScience

Jichao Sun¹  Jian Jin²  Aqiang Wang³  Jingye Li⁴  Shiling Yuan⁴  Yuzhang Zhu⁵  Hongzhen Lin⁵  Wangxi Fang⁵ 

[1] Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China;College of Chemistry and Materials Science, Shanghai Normal University, No. 100 Guilin Road, Shanghai, 200234, China;;College of Chemistry, Chemical Engineering and Materials Science &Key Lab of Colloid and Interface Chemistry, Shandong University, Jinan 250100, China;i-Lab and CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, P.R. China;

关键词: Materials science;    Materials chemistry;    Materials synthesis;    Materials property;   

DOI  :  

来源: DOAJ

【 摘 要 】

Summary: It is of great importance and practical value to develop a facile and operable surface treatment method of materials with excellent antipollution and antiadhesion property, but still a huge challenge. In this work, a series of pseudo-zwitterions are prepared from electrostatic assembly of cationic polyethyleneimine and anionic phosphonic clusters. These pseudo-zwitterionic assemblies provide a strong hydration through electrostatic interaction with water and in turn create a barrier against oil foulants, leading to a nearly zero crude oil adhesion force. The pseudo-zwitterions-decorated surfaces exhibit exceptional water-cleanable oil-repellent property, even when they are completely dried and without prehydration before fouled by crude oil. While using these pseudo-zwitterions-modified polymeric membranes for separating surfactant stabilized oil-in-water emulsion, less than 10% decline of permeating flux is observed throughout a 2-h continuous separation experiment, showing excellent emulsion separation ability and antipollution performance for high viscous oil.

【 授权许可】

Unknown