Библиотека института физики им. Л.В. Киренского СО РАН

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

Формат представления найденных документов:
полный	информационный	краткий

Поисковый запрос: (<.>K=P(3HB) homopolymer<.>)

Общее количество найденных документов : 1

Effect of monomers of 3-hydroxyhexanoate on properties of copolymers poly(3-hydroxybutyrate-co 3-hydroxyhexanoate) / T. G. Volova, M. V. Uspenskaya, E. G. Kiselev [et al.] // Polymers. - 2023. - Vol. 15, Is. 13. - Ст. 2890, DOI 10.3390/polym15132890. - Cited References: 99. - The study was funded by the Russian Science Foundation (project No 23-64-10007) . - ISSN 2073-4360
Кл.слова (ненормированные):
P(3HB-co-3HHx) copolymers -- P(3HB) homopolymer -- various synthesis conditions -- molecular weight -- crystallinity -- thermal properties -- isothermal crystallization -- spherulites
Аннотация: The properties of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) P(3HB-co-3HHx) copolymers with different ratios of monomers synthesized by the wild-type strain Cupriavidus necator B-10646 on sugars, and an industrial sample from Kaneka synthesized by the recombinant strain C. necator NSDG-ΔfadB1 on soybean oil, were studied in a comparative aspect and in relation to poly(3-hydroxybutyrate) P(3HB). The copolymer samples, regardless of the synthesis conditions or the ratio of monomers, had reduced values of crystallinity degree (50–60%) and weight average molecular weight (415–520 kDa), and increased values of polydispersity (2.8–4.3) compared to P(3HB) (70–76%, 720 kDa, and 2.2). The industrial sample had differences in its thermal behavior, including a lower glass transition temperature (−2.4 °C), two peaks in its crystallization and melting regions, a lower melting point (Tmelt) (112/141 °C), and a more pronounced gap between Tmelt and the temperature of thermal degradation (Tdegr). The process, shape, and size of the spherulites formed during the isothermal crystallization of P(3HB) and P(3HB-co-3HHx) were generally similar, but differed in the maximum growth rate of the spherulites during exothermic crystallization, which was 3.5–3.7 μm/min for P(3HB), and 0.06–1.25 for the P(3HB-co-3HHx) samples. The results from studying the thermal properties and the crystallization mechanism of P(3HB-co-3HHx) copolymers are important for improving the technologies for processing polymer products from melts.

Смотреть статью,
WOS,
Читать в сети ИФ
Держатели документа:
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Akademgorodok 50/50, 660036 Krasnoyarsk, Russia
School of Fundamental Biology and Biotechnology, Siberian Federal University, Svobodnyi Av. 79, 660041 Krasnoyarsk, Russia
Chemical Engineering Center, Research Institute «Bioengineering» ITMO University, Kronverksky Pr. 49, 197101 Saint Petersburg, Russia
L. V. Kirensky Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Akademgorodok 50/38, 660036 Krasnoyarsk, Russia
Basic Department of Solid State Physics and Nanotechnology, School of Engineering Physics and Radio Electronics, Siberian Federal University, Kirensky St. 26, 660074 Krasnoyarsk, Russia

Доп.точки доступа:
Volova, Tatiana G.; Uspenskaya, Mayya V.; Kiselev, Evgeniy G.; Sukovatyi, Aleksey G.; Zhila, Natalia O.; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Shishatskaya, Ekaterina I.
}
Найти похожие