Abstract
The preparations of segmented polyurethanes containing phosphorylcholine (PC) group and polycarbonate segment were carried out by polyaddition of PC-containing diol monomer, 2-(3,5-bis(2-hydroloxyethoxy)benzoyloxy)ethyl phosphorylcholine, and polycarbonate diol with 4,4’-diphenylmethane diisocyanate. Then, the solubility, the surface property, the blood compatibility and the mechanical strength of the obtained polyurethanes were investigated to reveal the effect of the PC content on the physical and biological properties of polymer films. As a result, the obtained polyurethanes showed the high thermal stability and the elastic property. On the other hand, ultra-thin films (nanosheets) obtained from segmented polyurethanes showed a high adhesive strength and a tendency of shrinking. Furthermore, it was found that the nanosheets-coated surface prevented the adhesion and the activation of platelets.
