Trends in Cryotropic Gelation of Semidilute Aqueous Solutions of Poly(vinyl alcohol) with Different Thermal History

Kurskaya, E.A.; Podorozhko, E.A.; Afanasyev, E.S.; Kononova, E.G.; Askadskii, A.A.

Авторы: Kurskaya E.A., Podorozhko E.A., Afanasyev E.S., Kononova E.G., Askadskii A.A.
Журнал: Polymer Science, Series A
Том: 64
Номер: 1
Год издания: 2022
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 19
Последняя страница: 37
Оригинальные версии: Некоторые тенденции криотропного гелеобразования полуразбавленных водных растворов поливинилового спирта с различной термической предысторией
DOI: 10.1134/s0965545x22010060
Аннотация: Different trends observed during cryotropic gelation of 8% poly(vinyl alcohol) aqueous solutions (preheated to 25, 55, and 85°С) at rapid cooling and freezing of the system have been examined. The data of rheology, thermomechanical analysis, attenuated total reflection, and scanning electron microscopy have revealed that the macroporous poly(vinyl alcohol) cryogels formed under above conditions differ in elastoplastic properties, swelling ability in water, degree of microcrystallinity, and pores size. The obtained results have been confirmed by the study of diffusional release of stabilized silver nanoparticles from the cryogels. It has been shown that the macropores walls in the cryogel network consist of spherical formations, likely contacting microgel particles formed during the liquid-phase separation of the polymer solution prior to the cryotropic gelation stage.
Добавил в систему: Мацеевич Андрей Вячеславович

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Trends in Cryotropic Gelation of Semidilute Aqueous Solutions of Poly(vinyl alcohol) with Different Thermal Historyстатья

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