Chemical Journal of Chinese Universities ›› 2021, Vol. 42 ›› Issue (Album-4): 1-7.doi: 10.7503/cjcu20200697

• Article •    

Preparation of Carboxyl-betaine Polyurethane Hydrogel and Study on Its Underwater Anti-crude-oil-adhesion Property

WANG Aqiang1, ZHU Yuzhang2(), JIN Jian1,2()   

  1. 1.College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China
    2.Suzhou Institute of Nano?Tech and Nano?Bionics,Chinese Academy of Sciences,Suzhou 215123,China
  • Received:2020-09-21 Online:2020-10-20 Published:2020-12-07
  • Contact: ZHU Yuzhang;jjin@
  • Supported by:
    ? Supported by the National Natural Science Foundation of China(51625306)


Quaternary ammonium ionic diol was synthesized by nucleophilic substitution reaction between ethyl 4-bromobutyrate and N-Methyldiethanolamine. Then, polyurethane prepolymer was prepared via the polymerization of the quaternary ammonium ionic diol and hexamethylene diisocyanate(HDI) trimer. By the process of alkaline hydrolysis, carboxyl-betaine polyurethane hydrogel with different hydrolysis time was finally obtained. The result shows the underwater oil contact angles of hydrolyzing-for-60-min carboxyl-betaine polyurethane hydrogel for cetane, kerosene, petroleum ether, isooctane and even crude oil are all above 160° and the corresponding underwater oil-adhesion forces are all 0. Carboxyl-betaine polyurethane hydrogel with excellent underwater anti-crude-oil-adhesion was successfully prepared.

Key words: Carboxyl-betaine, Polyurethane, Hydrogel, Superoleophobic property, Anti-crude-oil-adhesion

CLC Number: