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Interactions between segmented polyurethane surfaces and the plasma protein fibrinogen

โœ Scribed by Stupp, S. I. ;Kauffman, J. W. ;Carr, S. H.

Publisher
John Wiley and Sons
Year
1977
Tongue
English
Weight
571 KB
Volume
11
Category
Article
ISSN
0021-9304

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โœฆ Synopsis

Abstract

Surfaces of a segmented polyurethane were varied by casting on poly(ethylene terephthalate) (PET) and glass substrates, and were characterized through infraredโ€attenuated totalโ€reflection spectroscopy (ATR). Surfaces cast on glass substrates showed a higher content of polyether segments, whereas those cast on PET contained a higher relative concentration of aromatic segments. Adsorption, and possible conformational changes of fibrinogen, were found to be more substantial on polymer surfaces having a higher content of polyether segments. It is concluded that the relatively good blood compatibility of segmented polyurethanes is partly due to the presence of peptideโ€like bonds on aromatic segments.

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