Synthesis and Modeling of Poly(L-lactic acid) via Polycondensation of L-Lactic Acid
Alexis Theodorou,
Vasilios Raptis,
Chrissie Isabella Maria Baltzaki
et al.
Abstract:We present synthetic experiments of lactic acid (LA) polycondensation to produce poly(lactic acid) (PLA) as well as kinetic modeling calculations that capture the polymer molecular weight increase with time, given the initial concentrations. Tin-octoate-catalyzed polycondensation of (D,L)- or L-lactic acid was carried out in pre-dried toluene after azeotropic dehydration for 48–120 h at 130–137 °C. The polymerization was optimized by varying lactic acid and catalyst concentrations as well as the temperature. G… Show more
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