The mechanism of segmental exchange in the polymerization of L-lactide catalysed by tin(II) 2-ethylhexanoate/alcohol system was studied as a model system. It was shown by analysis of MALDI-TOF spectra and modelling by Monte Carlo that the carbonyl group closest to the tin atom is at least 100 times more reactive than other carbonyl groups along the chain.
S. Sosnowski and P. Lewinski, Polym. Chem., 2015, 6, 6292 DOI: 10.1039/C5PY00748H
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