Abstract
L-lactide synthesis from an aqueous solution of L-lactic acid under different conditions in the presence or absence of a catalyst (zinc oxide, stannous octoate or magnesium ethoxide) has been studied. Synthe-sis of L-lactide is accompanied by analytical control. The glass transition temperature of lactic acid oligo-mers, i.e. a product of polycondensation at the first stage of the process, has been investigated using differential scanning calorimetry (DSC). Identification and quantitative deter-mination of lactic acid and L-lactide at different stages of the synthesis have been performed by HPLC. A residual solvent in L-lactide after its recrystallization has been determined by gas chromatography-mass spectrometry (GC-MS).
| Original language | English |
|---|---|
| Pages (from-to) | 561-566 |
| Number of pages | 6 |
| Journal | Petroleum and Coal |
| Volume | 58 |
| Issue number | 5 |
| Publication status | Published - 1 Jan 2016 |
Keywords
- Lactic acid oligomer
- Lactide
- Recrystallization
ASJC Scopus subject areas
- Energy(all)
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Krutas, D. S., Brožek, J., Benešová, V., Zinovyev, A. L., & Novikov, V. T. (2016). Synthesis of l-lactide supplemented with stage-wise analytical control. Petroleum and Coal, 58(5), 561-566.