Preparation and Characterization of a New Negatively Charged PTFE Fiber Membrane for Separating Oil-in-water Emulsions Containing Cationic Emulsifiers

A new hydrophilicity and negatively charged polytetrafluoroethylene (PTFE) fiber membrane has been developed and characterized. Specifically, the dopamine (DA) and polyethylenimine (PEI) were co-deposited onto the PTFE fiber membrane surface via covalent connection. Then the amine groups of the memb...

Full description

Saved in:
Bibliographic Details
Published in:Fibers and polymers 2021, 22(11), , pp.3025-3034
Main Authors: Li, Chengcai, Tang, Tao, Zheng, Tao, Hong, Wei, Wang, Feng, Liu, Guojin, Lei, Caihong, Yu, Yuan, Zhu, Hailin, Guo, Yuhai
Format: Article
Language:English
Subjects:
Cations
Chemistry
Chemistry and Materials Science
Contact angle
Dopamine
Emulsifiers
Emulsions
Hydrophilicity
Maleic anhydride
Membranes
Polyethyleneimine
Polymer Sciences
Polytetrafluoroethylene
Pore size
X ray photoelectron spectroscopy
Zeta potential
섬유공학
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A new hydrophilicity and negatively charged polytetrafluoroethylene (PTFE) fiber membrane has been developed and characterized. Specifically, the dopamine (DA) and polyethylenimine (PEI) were co-deposited onto the PTFE fiber membrane surface via covalent connection. Then the amine groups of the membrane surface were reacted with anhydride groups of poly(ethylene-alt-maleic anhydride) (PEMA). Last, unreacted anhydride groups have hydrolysis and ionization. The preparation membrane has been investigated and confirmed by using XPS, ATR-FTIR, SEM, Zeta potential analyzer, pore size analyzer water contact angle, respectively. The results showed that the membranes were endowed with excellent hydrophilicity and negatively charged. It has high separation efficiency and permeation flux for oil-in-water emulsion containing cationic emulsifiers, and excellent anti-fouling property.
ISSN:1229-9197
1875-0052
DOI:10.1007/s12221-021-0390-6