|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
New approaches to molecular heterogeneity analysis of associating copolymers based on acrylamideстатья
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 29 мая 2015 г.
- Авторы: Blagodatskikh I.V., Vasil'eva O.V., Pryakhina T.A., Churochkina N.A., Smirnov V.A., Filippova O.E., Khokhlov A.R.
- Журнал: Polymer Science, Series B
- Том: 46
- Номер: 1-2
- Год издания: 2004
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 14
- Последняя страница: 22
- Аннотация: A comprehensive approach to analysis of molecular mass heterogeneity of strongly associating hydrophobically modified charged terpolymers based on acrylamide was developed. The use of a cosolvent (acetonitrile) allows the onset of hydrophobic aggregation to be shifted to concentrations corresponding to a transition to the region of semidilute solutions of the parent poly (acrylamide). The dissolution of hydrophobic aggregates is monitored by fluorescence spectroscopy using pyrene as a probe and dynamic light scattering. The absolute values of M-w were measured by static light scattering in mixed solvents, and molecular mass distribution was estimated by gel permeation chromatography with calibration relative to hydrophobically modified poly(acrylamide) samples whose molecular masses were estimated by light scattering or gel permeation chromatography with a light scattering detector. An evolution of the molecular mass characteristics of terpolymers in the course of micellar acrylamide copolymerization with N-nonyl acrylamide and sodium acrylate was investicyated. It was shown that the molecular heterogeneity enhances with conversion due to accumulation of a low-molecular-mass fraction.
- Добавил в систему: Хохлов Алексей Ремович