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Wan Meng,권오형,강인규,현재영,Xinglin Guo,조얼령 한국생체재료학회 2002 생체재료학회지 Vol.6 No.2
A-B-A type block copolymers were prepared by the polymerization of (-benzyloxycarbonyl L-lysine N-carboxyanhydride) (A segment) using amino-terminated polyoxypropylene (POP, B segment) as an initiator. The morphology of the block copolymers showed POP domains dispersed in the poly(-benzyloxycarbonyl L-lysine) (PBCL) matrix. Water contact angles of films of the block copolymer were almost same as that of the surface of PBCL film. Upon acid treatment of the block copolymer films, water contact angles decreased. Thrombus formation on block copolymer films was minimum for a POP content of 29 mol%. Identical results were obtained from a blood clotting test. The number of platelets adhered to the bulk and the surface-modified block copolymers was almost equal. However, serotonins were less released from the platelets adhered on the PL-2 block copolymer and surface-modified block copolymers (MPL-1, MPL-2, MPL-3).