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Surface modification of silicone rubber with poly(ethylene glycol) hydrogel coatings

โœ Scribed by T. Vladkova

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
149 KB
Volume
92
Category
Article
ISSN
0021-8995

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โœฆ Synopsis

Abstract

Hydrogel coatings of monoacrylated poly(ethylene glycol) (PEG) methyl ethers of different molecular weights were attached to silicon rubber surfaces and crosslinked with hexanediol diacrylate or ethoxylated trimethylolpropane diacrylate by UV polymerization. The wetting, evaluated with the water contact angles, correlated with the surface oxyethylene chain density, which was evaluated with the ESCA >C๏ฃฟO๏ฃฟ/๏ฃฟCH~2~๏ฃฟ ratio obtained from the C(1s) peak. As measured by the ESCA N(1s) peak, bovine serum albumin formed very thin protein adsorbates on the PEGโ€coated surfaces. A strong correlation was found between low protein adsorption and a high >C๏ฃฟO๏ฃฟ/๏ฃฟCH~2~๏ฃฟ ratio of the PEGโ€coated substrate. The PEGโ€coated silicon rubber also demonstrated very low cell and platelet adhesion. ยฉ 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 1486โ€“1492, 2004

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