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A MALDI mass spectrometry investigation of the compositions of the products of the partial acidolysis of MeSi(OMe)3статья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 17 апреля 2018 г.
- Авторы: Ivanov A.G., Kopylov V.M., Kireev V.V., Borisov R.S., Fedotova T.I., Bilichenko Yu V.
- Журнал: Polymer Science, Series B
- Том: 56
- Номер: 1
- Год издания: 2014
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 49
- Последняя страница: 54
- DOI: 10.1134/s1560090414010035
- Аннотация: The molecular-mass compositions of the products of partial acidohydrolytic polycondensation that are formed during the interaction of MeSi(OMe)3 with CH3COOH have been studied via MALDI mass spectrometry. It has been shown that, depending on the molar ratio of MeSi(OMe)3 and CH3COOH (m/n), a wide range of oligomethylmethoxysiloxanes with the average composition [MeSiO n/m (OMe)(3 - 2n/m)] p are formed. The analysis of molecular masses and 29Si NMR spectra of the products has revealed various types of molecular structures, which change from linear, branched, and cyclic to polycyclic clusters with condensed cycles after a change in the degree of polycondensation α = 100 × [2n/3m] from 66.67 to 83.33%. At a degree of polycondensation of α = 86.67% or higher, the polycyclic clusters form a spatially crosslinked structure (gel).
- Добавил в систему: Биличенко Юлия Викторовна