Optimum conditions for the synthesis of linear polylactic acid-based urethanes

Jenö Borda, Ildikó Bodnár, Sándor Kéki, László Sipos, Miklós Zsuga

Research output: Article

29 Citations (Scopus)


The reactions of polylactic acid (PLA) oligomers and isocyanates (4,4′-diphenylmethane diisocyanate and toluene diisocyanate) are reported. The effects of the reaction conditions, that is, the reaction time, reaction temperature, molar ratios, isocyanates, and catalyst, on the number-average molecular weight (Mn) are demonstrated. The optimum reaction conditions are determined by the synthesis of relatively high Mn PLA-based linear polyurethanes. The structure of the polymer samples was investigated with dynamic light scattering, 1H NMR, IR, and matrix-assisted laser-desorption ionization time-of-flight mass spectroscopy (MALDI-TOF MS).

Original languageEnglish
Pages (from-to)2925-2933
Number of pages9
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Issue number16
Publication statusPublished - aug. 15 2000

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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