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Effect of preparation conditions on the dielectric properties of lightly cross-linked poly(sodium methacrylate)статья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 28 мая 2015 г.
- Авторы: Malyshkina I.A., Gavrilova N.D., Makhaeva E.E.
- Журнал: Polymer Science, Series B
- Том: 41
- Номер: 1-2
- Год издания: 1999
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 34
- Последняя страница: 38
- Аннотация: The dielectric properties of dried gels based on poly(sodium methacrylate) were studied in a wide range of frequencies (20 Hz-20 kHz) and temperatures (20-80°C). The corresponding hydrogels were synthesized in solution at varying monomer concentrations (20, 30, and 40%). The dried gels exhibit sufficiently high dielectric constants (from 100 to 800), which increase as the synthesis is performed with the increasing initial concentration of the monomer. High values of the dielectric constant are explained by the presence of residual water in the system. The fraction and properties of the residual water are governed by the topological structure of the three-dimensional polymer. Addition of water in the dried gels results in an increase of the dielectric constant by 105 times, while, in the case of heavy water, this effect was weaker.
- Добавил в систему: Гаврилова Надежда Дмитриевна