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The Ring-opening Polymerization of D, L-Lactide Initiatedwith Stannous Octoate

Shipu Li

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Abstract

The ring-opening polymerization of D, L-lactide in the melt VMS systematically investigated by using stannous octoate as the initiator. The molecular weight of poly (D, L-lactide) was characterized with M , Mn and Mw respectively. The results indicated that five variables , namely purity of monomer, initiator to monomer ratio, vacuum level, polymerization temperature and polymerization time had different influences on the molecular weight and molecular weight distribution of poly (D, L-lactide) .

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What this paper is about

The ring-opening polymerization of D, L-lactide in the melt VMS systematically investigated by using stannous octoate as the initiator. The molecular weight of poly (D, L-lactide) was characterized with M , Mn and Mw respectively. The results indicated that five variables , namely purity of monomer, initiator to monomer ratio, vacuum level, polymerization temperature and polymerization time had different influences on the molecular weight and molecular weight distribution of poly (D, L-lactide) .

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Available abstract

The ring-opening polymerization of D, L-lactide in the melt VMS systematically investigated by using stannous octoate as the initiator. The molecular weight of poly (D, L-lactide) was characterized with M , Mn and Mw respectively. The results indicated that five variables , namely purity of monomer, initiator to monomer ratio, vacuum level, polymerization temperature and polymerization time had different influences on the molecular weight and molecular weight distribution of poly (D, L-lactide) .

Key concepts: Polymerization, Polymer chemistry, Monomer, Lactide, Ring-opening polymerization, Molar mass distribution, Bulk polymerization, Chemistry

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