关键词: 开环易位聚合反应, 酶促开环聚合反应, 化学酶法, 嵌段聚合物

Abstract:

Copolymer PCL\|b\|PB\|b\|PCL was successfully prepared by a novel chemoenzymatic strategy coupled with  enzymatic ringopening polymerization
 (eROP)  and ringopening metathesis polymerization (ROMP). The chemical structures of the products were characterized by ¹H NMR, GPC and DSC. A complete shift of the GPC trace to higher molecular weights  illustrates that the copolymer was successfully prepared.  ¹H NMR data clearly show  block in the copolymer is hydrolyzed completely, and a clear shift of the GPC trace to lower molecular weights  illustrates that the synthetic strategy is reliability.

Key words: ring-opening metathesis polymerization (ROMP), enzymatic ring-opening polymerization(eROP), chemoenzymatic, block polymer