TY  - BOOK
AU  - Thakur,K.Am
AU  - Kean,R.T.
AU  - Hall,E.S.
AU  - Kolstad,J.J.
AU  - Lindgren,T.A.
AU  - Doscotch,M.A.
AU  - Siepmann,J.I.
AU  - Siepmann,J.I.
TI  - High-Resolution 13C and 1H Solution NMR Study of Poly(lactide)
N2  - High-resolution 500 MHz solution-state 1H and 13C NMR spectra of various poly(lactides)indicate at least hexad stereosequence sensitivity. The poly(lactides)were prepared in vials by melt polymerization of various combinations of L-lactide, D-lactide, and meso-lactide at 180 °C for 3 h using tin(II)bis(2-ethylhexanoate)(tin(II)octoate)as the catalyst in a 1:10 000 ratio. The intensity distribution of the various stereosequence resonances in the NMR spectra indicates a preference for syndiotactic addition during the polymerization process. Minimal evidence of transesterification was observed for these polymerization conditions
UR  - https://drive.google.com/file/d/1mU5AYvEaUbhCTzHbCjxxxFJ0nHJwdFqe/view?usp=drivesdk
ER  -