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Rapid Ring-Opening Polymerization of D,L-Lactide by Microwaves

✍ Scribed by Chao Zhang; Liqiong Liao; Lijian Liu

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
91 KB
Volume
25
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Summary: Poly(D,L‐lactide) with a molar mass of 10^5^ g · mol^−1^ and a yield over 90% was produced in 10 min by the ring‐opening polymerization of D,L‐lactide under microwave irradiation with forward power of 255 W. A degradation of the poly(D,L‐lactide) was also induced by microwaves with a power level over 340 W. The molar mass of poly(D,L‐lactide) was dependent upon the competition between the polymerization of D,L‐lactide and the degradation of the resulting polymer.

Profiles of molar mass versus microwave irradiation time (1.8 g DLLA, 0.1% Sn(Oct)~2~).

magnified imageProfiles of molar mass versus microwave irradiation time (1.8 g DLLA, 0.1% Sn(Oct)~2~).

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