supported by Natural Science Foundation of Chongqing (No.CSTC2006BB5010);the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry (No.2007-1108).
A novel degradable pH-sensitive hydrogel with pendent carboxyl groups was designed and synthesized from ethylenediaminetetraacetic dianhydride (EDTAh) and butanediamine (BDA) with dicyclohexylcarbodiimide (DCC) ...