Li-min WU, Feng-wen HOU, Feng-jian ZHU, Hong-gen YIN, Yi LI, Rong-shi CHENG. A Viscometric Study of Adsorption of Gelatin on the Surface of Polyurethane Elastomer[J]. Polymer Bulletin, 2011,24(7):71-76.
Li-min WU, Feng-wen HOU, Feng-jian ZHU, Hong-gen YIN, Yi LI, Rong-shi CHENG. A Viscometric Study of Adsorption of Gelatin on the Surface of Polyurethane Elastomer[J]. Polymer Bulletin, 2011,24(7):71-76. DOI: 10.14028/j.cnki.1003-3726.2011.07.013.
A special Polyurethane (PU) Elastomer with good mechanical property was prepared from Isophorone diisocyanate (IPDI) according to literature.Heparin has been grafted onto the surface of the PU elastomer and PU-Hep elastomer was obtained.By immersing the PU elastomers in dilute gelatin aqueous solution and measuring the viscosity of the solution at different time
concentration and temperature
we found that the gelatin macromolecules accumulated on the surface of PU elastomer as soon as they contacted.However
it need a long time to reach the adsorption equilibrium.The amount of adsorption for gelatin was calculated from experimental relative viscosity data using a viscosity equation with interfacial effect correction.The result showed that in the range of 35℃~42℃
along with the increasing of the temperature
more gelatin macromolecules has been adsorbed on the surface of the PU elastomer
and the PU-hep elasomer showed larger adsorption capacity.