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On the Flexibility of Polyheteroarylenes and the Effect on Several Physical Properties of these Polymersстатья Глава в книге
Информация о цитировании статьи получена из
Scopus
Дата последнего поиска статьи во внешних источниках: 31 июля 2019 г.
- Автор: Inga Ronova
- Сборник: Polymer Chains: Structure, Physical Properties and Industrial Uses
- Глава в коллективной монографии
- Год издания: 2012
- Место издания: Nova Science Publisher New York USA
- Первая страница: 1
- Последняя страница: 98
- Аннотация: Conformational parameters for a wide variety of aromatic cyclochain polymers have been calculated assuming free rotation about virtual bonds. The flexibilility with free rotation Afr is shown to be determined by the geometry of repeat unit and can vary over a wide range (10 Å - ∞). Experimental value of Kuhn segment length Aexp are calculated from literature data on the hydrodynamic behavior of polymeric macromolecules of this class in dilute solution. For most polymers Afr is equal to experimental Aexp and hindered rotation is mainly due to bulky substitutions. The dependences of several physical properties such glass transition temperature, friction coefficient, elasticity modulus, dielectric constant, remaining normalized surface potentials, fire-resistance parameters on conformational rigidity of polymer chain are revealed for polyheteroarylenes. The contribution of conformational rigidity of a polymer chain to physical properties of this class of polymers is shown to be significant.
- Добавил в систему: Ронова Инга Александровна