Vacuum Effect on the Lactide Yield; Procedia Chemistry; Vol. 15 : Chemistry and Chemical Engineering in XXI century (CCE 2015)

Vacuum Effect on the Lactide Yield

Detalhes bibliográficos
Parent link:Procedia Chemistry
Vol. 15 : Chemistry and Chemical Engineering in XXI century (CCE 2015).— 2015.— [P. 301-307]
Autor Corporativo: Национальный исследовательский Томский политехнический университет (ТПУ) Институт природных ресурсов (ИПР) Кафедра технологии органических веществ и полимерных материалов (ТОВПМ)
Outros Autores: Yarkova A. V. Anna, Novikov V. T. Viktor Timofeevich, Glotova V. N. Valentina Nikolaevna, Shkarin R. V. Roman Vladimirovich, Borovikova Ya. S. Yana
Resumo:Title screen
The vacuum effect on the yield and purity of lactide obtained by catalytic lactic acid oligomer depolymerization was investigated. As raw material for the lactic acid oligomer synthesis the L-lactic acid aqueous solution was used. It was shown that the highest yield of raw-lactide takes place via distillation under a vacuum. The raw-lactide in all fractions was purified by recrystallization from dry ethyl acetate. The highest yield of raw-lactide is observed at a vacuum of 10 ... 15 mbar. The distillation process of raw-lactide is complicated with chemical reactions. Control of the reaction, raw materials and products was performed using DTA, gel permeation chromatography, infrared spectroscopy and high performance liquid chromatography.
Режим доступа: по договору с организацией-держателем ресурса
Idioma:inglês
Publicado em: 2015
Assuntos:
электронный ресурс
труды учёных ТПУ
олигомеры
молочная кислота
лактиды
полимеры
вакуумные эффекты
Acesso em linha:http://dx.doi.org/10.1016/j.proche.2015.10.048
http://earchive.tpu.ru/handle/11683/15068
Formato: Recurso Electrónico Capítulo de Livro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=645387

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