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- W4245994411 abstract "Polymerization of several lactones were carried out by employing Pseudomonas sp. lipase as the catalyst. The data indicate that water is consumed at the onset of polymerization and released in part during subsequent stages, leading us to propose a complex mechanism for the enzymatic polymerization of lactone. This mechanism involves both ring-opening and linear condensation polymerization. The former was dominant at the early stage while the latter was dominant in the later stage. In addition, the reaction media showed complex influences on enzymatic polymerization. Some organic solvents increased the degree of polymerization (DP) and decreased the molecular weight distribution. A strategy to increase the molecular weight of the polymer is introduced, which led to the synthesis of a polymer with a number-average molecular weight (Mn) of 14,500—the highest Mn of poly(ε-caprolactone) prepared by enzyme-catalyzed polymerization thus far—and molecular weight distribution of 1.23. © 1999 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 37: 1265–1275, 1999" @default.
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- W4245994411 date "1999-05-01" @default.
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- W4245994411 title "Study on the enzymatic polymerization mechanism of lactone and the strategy for improving the degree of polymerization" @default.
- W4245994411 doi "https://doi.org/10.1002/(sici)1099-0518(19990501)37:9<1265::aid-pola6>3.3.co;2-9" @default.
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