Abstract
The mechanisms that control the nucleation kinetics in foamed amorphous D,L-polylactide, which was preliminary plasticized using subcritical or supercritical carbon dioxide, were determined by analyzing the video data on the depressurization-induced quasi-isothermal (313.3 K) foaming of the polymer. Possible scenarios of phase separation in the polylactide–carbon dioxide system at the stage preceding active foam formation were considered.
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Funding
This study was financially supported by the Ministry of Science and Higher Education under the government contract at the Federal Research Center “Crystallography and Photonics”, Russian Academy of Sciences (improvement of the experimental unit based on a multi-window high-pressure reactor) and by the Russian Foundation for Basic Research (grant no. 18-29-06024mk) (experiments on nucleation in the polylactide–carbon dioxide system and data interpretation).
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Zimnyakov, D.A., Popov, V.K., Minaev, N.V. et al. Competition of Phase Separation Processes during Quasi-Isothermal Foaming of Polylactide in Carbon Dioxide Environment. Russ. J. Phys. Chem. B 14, 1268–1276 (2020). https://doi.org/10.1134/S1990793120080084
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DOI: https://doi.org/10.1134/S1990793120080084