Fast microwave-mediated bulk polycondensation of D,L-lactic acid

Authors
Keki, S Bodnar, I Borda, J Deak, G Zsuga, M
Citation
S. Keki et al., Fast microwave-mediated bulk polycondensation of D,L-lactic acid, MACRO RAPID, 22(13), 2001, pp. 1063-1065
Citations number
19
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
MACROMOLECULAR RAPID COMMUNICATIONS
ISSN journal
10221336 → ACNP
Volume
22
Issue
13
Year of publication
2001
Pages
1063 - 1065
Database
ISI
SICI code
1022-1336(20010918)22:13<1063:FMBPOD>2.0.ZU;2-0
Abstract
The polycondensation of D,L-lactic acid upon microwave irradiation was stud ied. The results of polycondensation by means of microwave were compared ob tained from conventional heating of lactic acid at 100 degreesC, and it was found that the reaction proceeds with much. higher rate upon microwave irr adiation. The oligomer mixtures formed were investigated by means of matrix -assisted laser desorption/ionization mass spectrometry (MALDI MS). The mol ecular mass of the poly(lactic acid) formed under microwave irradiation was found to increase with irradiation time, and the formation of cyclic oligo mers after 20 min of reaction time was also revealed.