Gelatin Immobilization onto Polyurethane Urea Surface through Aminolysis

In this research, potential biomolecule immobilization of poly (urethane urea) (PUU) on the surface in comparison with polycaprolactone (PCL) and polyurethanes (PUs) is investigated. The PUU was synthesized by PCl diol and 1,6-diisocyanatohexane without any chain extender. The synthesized PUU was chemically modified with gelatin (Gel-g-PUU) via aminolysis. Modifying steps were studied through titration, ATR-FTIR, water contact angle, surface free energy and zeta potential. The results showed that it is possible to graft significantly larger amounts of amino groups on the PUU surface compared to those previously reported for PCL (three times), and polyurethanes (twice as much).

کلیدواژه ها:

Polyurethane urea ، aminolysis ، gelatin ، grafting density