高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (6): 1337-1344.doi: 10.7503/cjcu20190706

• 物理化学 • 上一篇    下一篇

单宁酸/两性离子改性油-水分离膜的制备及性能

彭新艳,刘云鸿*(),李嘉文,冯乙胧,王汉春   

  1. 泉州师范学院化工与材料学院, 泉州 362000
  • 收稿日期:2019-12-25 出版日期:2020-06-10 发布日期:2020-05-13
  • 通讯作者: 刘云鸿,王汉春 E-mail:liuyunhong_9@163.com
  • 基金资助:
    泉州市科技计划项目(2019C105);泉州师范学院博士启动基金

Preparation and Characterization of Tannin/Zwitterionic Modified Oil-water Separation Membrane

PENG Xinyan,LIU Yunhong*(),LI Jiawen,FENG Yilong,WANG Hanchun   

  1. School of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, China
  • Received:2019-12-25 Online:2020-06-10 Published:2020-05-13
  • Contact: Yunhong LIU,Hanchun WANG E-mail:liuyunhong_9@163.com
  • Supported by:
    † Quanzhou Technology Plan Project, China(2019C105);Ph.D. Research Start-up Fund of Quanzhou Normal University, China

摘要:

以不锈钢网为基材, 利用单宁酸对不锈钢网进行表面预处理并功能化接枝两性离子基团, 制备了新型亲水和水下超疏油的单宁酸/两性离子改性油-水分离膜(TA-ZW-SSM). 利用X射线光电子能谱仪(XPS)、 扫描电子显微镜(SEM)及接触角测量仪等表征了其化学结构、 形态和润湿性. 研究结果表明, 两性离子基团通过化学键接枝在单宁酸预处理的不锈钢网表面. 油-水分离实验结果表明, 对于不同类型的油-水混合物, 本文制备的超亲水和水下超疏油特性的TA-ZW-SSM可实现重力驱动的高效油-水分离, 并具有较好的化学稳定性及再循环性.

关键词: 单宁酸, 两性离子, 超亲水/水下超疏油分离膜, 表面改性, 油-水分离

Abstract:

Based on the chemical properties of tannic acid and the special wettability of zwitterionic groups, we successfully prepared the ultrahydrophilic and underwater ultraoleophobic separation membrane. The stainless steel mesh was used as substrate, which was grafted by zwitterionic polymers after pre-treatment with tannic acid. The micro-chemical structure and wettability of the oil-water separation membrane were characterized by X-ray photoelectron spectroscopy(XPS), scanning electron microscope(SEM), and contact angle mea-suring instrument. The results show that zwitterionic groups were grafted through chemical bonding. The obtained oil-water separation membrane enable an efficient and energy-saving separation for various oil-water mixture by gravity-driven. Meanwhile, the membrane demonstrates excellent chemical stability and recyclability.

Key words: Tannic acid, Zwitterion, Ultrahydrophilic and underwater ultraoleophobics separation membrane, Surface modification, Oil-water separation

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