Local Dissipative Processes in Chitosan-Poly(vinyl alcohol) Compositeстатья
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Дата последнего поиска статьи во внешних источниках: 11 декабря 2019 г.
Аннотация:The internal friction spectra in the chitosan – polyvinyl alcohol system in a wide temperature range are obtained and analyzed by the method of freely damped torsional vibrations. The defect of the module characterizing the physical and mechanical behavior of the system is determined. It is established that the composite material obtained in the form of a film, which has a different ratio of components, is a heterogeneous (dispersed system), where at a certain ratio of components the dispersion medium is polyvinyl alcohol. The existence of two peaks of glass transition on the temperature dependence α = f (T) caused by the dissipative processes of each individual component of the mixed film is revealed.DOI: 10.1134/S0965545X19040114