Grafting and characterization of poly (ethylene glycol) on polysulfone sheets.
- Author:
Lu SUN
1
;
Shudong SUN
;
Hong XIE
;
Xiaohua HUANG
;
Yilun YUE
Author Information
1. Department of Biomedical Polymers and Artificial Organs, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China.
- Publication Type:Journal Article
- MeSH:
Azides;
chemistry;
Biocompatible Materials;
chemistry;
Coated Materials, Biocompatible;
chemistry;
Membranes, Artificial;
Microscopy, Atomic Force;
Polyethylene Glycols;
chemistry;
Polymers;
chemistry;
Sulfones;
chemistry;
Ultraviolet Rays
- From:
Journal of Biomedical Engineering
2006;23(2):370-374
- CountryChina
- Language:Chinese
-
Abstract:
Grafting of poly (ethylene glycol) (PEG) on the surface of polysulfone (PSF) sheets by simultaneous or sequential UV irradiation with 4-azidobenzoic acid as the photocoupler was carried out. Water contact angle measurements showed that there was a great improvement of hydrophilicity on the grafted surface. X-ray photoelectron spectroscopy suggested that the area covered by PEG be 77.3% and 41.9% respectively after grafting by simultaneous and sequential pathways. With atomic force microscope (AFM), obvious difference in the shape and the phase mode was observed between surfaces of PEG-g-PSF sheets made by these two pathways. Evidences implied that simultaneous pathway would produce a branched PEG layer on the surface, while sequential pathway was coupled with a "pan-cake" PEG layer on it. This study provides the foundation for further advancement in tethering brush-like PEG on PSF hollow fiber membranes.
