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

Sándor Kéki, Ildikó Bodnár, Jenö Borda, György Deák, Miklós Zsuga

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The polycondensation of D,L-lactic acid upon microwave irradiation was studied. The results of polycondensation by means of microwave were compared to those obtained from conventional heating of lactic acid at 100°C. and it was found that the reaction proceeds with much higher rate upon microwave irradiation. The oligomer mixtures formed were investigated by means of matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS). The molecular mass of The poly(lactic acid) formed under microwave irradiation was found to increase with irradiation time, and the formation of cyclic oligomers after 20 min of reaction time was also revealed.

Original languageEnglish
Pages (from-to)1063-1065
Number of pages3
JournalMacromolecular Rapid Communications
Issue number13
Publication statusPublished - Sep 18 2001


ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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