Investigation of Water Sorption and Blood Compatible Behaviors of Polyethylene Glycol (PEG)—Plasticized Membranes of Poly(Vinyl Alcohol-g-Acrylonitrile)

2012 ◽  
Vol 4 (6) ◽  
pp. 469-478 ◽  
Author(s):  
Sangeeta Jain ◽  
A. K. Bajpai
Keyword(s):  
Polyethylene Glycol ◽  
Vinyl Alcohol ◽  
Water Sorption ◽  
Poly Vinyl Alcohol

scholarly journals Polyethylene glycol and poly(vinyl alcohol) hydrogels treated with photo-initiated chemical vapor deposition

2016 ◽  
Vol 94 (9) ◽  
pp. 744-750 ◽  
Author(s):  
Taraneh Javanbakht ◽  
Ariane Bérard ◽  
Jason R. Tavares
Keyword(s):  
Chemical Vapor Deposition ◽  
Polyethylene Glycol ◽  
Vapor Deposition ◽  
Photoelectron Spectroscopy ◽  
Vinyl Alcohol ◽  
Chemical Vapor ◽  
Molecular Structures ◽  
Poly Vinyl Alcohol ◽  
Chemical Structures ◽  
Initiated Chemical Vapor Deposition

This study was designed to determine if surface modification via photo-initiated chemical vapor deposition (PICVD) affects the physicochemical properties of polyethylene glycol (PEG) and poly(vinyl alcohol) (PVA) differently, given their different chemical structures and properties. Contact angle measurements showed that both polymers increase in surface hydrophobicity after PICVD treatment. Further, the improved hydrophobicity facilitated dispersion into nonpolar solvents. Chemical changes were concentrated near the surface, evidenced by Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS) measurements, indicating namely that partial oxidation occurs during treatment. These findings were discussed in the context of the difference of the molecular structures of PEG and PVA, which, in turn, control their surface functionalization and hydrophobicity.

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