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Does Cross-Link Density of PEO-Like Plasma Polymers Influence their Resistance to Adsorption of Fibrinogen?

Publikace na Matematicko-fyzikální fakulta |
2012

Tento text není v aktuálním jazyce dostupný. Zobrazuje se verze "en".Abstrakt

hin films of PEO-like plasma polymers with different extent of cross-linking were deposited by plasma-assisted vacuum thermal depolymerization of PEO. The films underwent considerable volume changes when in contact with water, i.e., they behaved as hydrogels.

A Flory-Rehner theory of gels corrected for non-Gaussian chain distribution was applied to derive the average molar mass between cross-links. Films with up to ten monomeric units between cross-links were fabricated, this number decreasing to one at enhanced rf power.

Such changes of structure resulted in a three-orders-of-magnitude increase of Young''s modulus. Even highly cross-linked films did not adsorb fibrinogen unless the concentration of the ether groups dropped below 65%.