Polypropylene Glycol: The Hydrophilic Phenomena in the Modification of Polyethersulfone Membranes

In this work, the polypropylene glycol (PPG) was observed showing obvious hydrophilicity improvement to polyethersulfone (PES) membranes when it was introduced. The water contact angles of the blend membranes were significantly lowered to 50° when contents of PPG were 25 wt % in the as-formed membra...

Full description

Saved in:
Bibliographic Details
Published in:Industrial & engineering chemistry research 2011-10, Vol.50 (19), p.11297-11305
Main Authors: Yi, Zhuan, Zhu, Liping, Xu, Youyi, Jiang, Jinhong, Zhu, Baoku
Format: Article
Language:English
Subjects:
Applied sciences
Blends
Chemical engineering
Contact angle
Durability
Enrichment
Exact sciences and technology
Membranes
Polyethersulfones
Polypropylene glycol
Separations
Surface chemistry
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:In this work, the polypropylene glycol (PPG) was observed showing obvious hydrophilicity improvement to polyethersulfone (PES) membranes when it was introduced. The water contact angles of the blend membranes were significantly lowered to 50° when contents of PPG were 25 wt % in the as-formed membranes. The stability test presented a good durability of PPG when blend membranes suffered a 70 days water washing. Surface constitution analysis revealed that PPG concentration in the near surface was nearly two times higher than the theoretic value, indicating the surface enrichment of PPG in membranes. A pore-forming effect was also observed though the porosity increase was not obvious. The results of platelet adhesion, flux recovery, and protein adsorption indicated a nice fouling-resistance property of blend membranes. The molecular folding as well as the surface aggregation of PPG was explored as a reason for the hydrophilic improvement to blend membranes.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie201238c