Improved hemocompatibility of poly(ethylene terephthalate) modified with various thiol-containing groups |
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Authors: | Gappa-Fahlenkamp Heather Lewis Randy S |
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Affiliation: | School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078, USA. |
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Abstract: | Thiol groups were attached to polyethylene terephthalate (PET) to promote the transfer of a known platelet inhibitor, nitric oxide (NO), from nitrosated thiols naturally found in the body to PET, followed by the release of NO from PET to prevent platelet adhesion. In order to immobilize the most thiols on the modified polymer, the processing parameters used to attach the following three thiol containing groups were assessed: L-cysteine, 2-iminothiolane, and a cysteine polypeptide. When comparing the immobilized concentrations of thiol groups from each of the optimized processes the amount of immobilized thiol groups increased in order with the following groups: cysteine polypeptide <2-iminothiolane
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