Study of the Effect of Temperature on the Properties of Gelatin-Chitosan Cryogels
Криогельдердің қасиеттеріне температураның әсерін зерттеу
Исследование влияния температуры на свойства криогелей
Kudaibergen G.K. Zhunussova M.S.
2022E.A.Buketov Karaganda State University Publish House
Bulletin of the Karaganda University Chemistry Series
2022#106Issue 24 - 11 pp.
Cryopolymers are a class of 3D structural polymers, which are widely used in tissue engineering. Using cryopolymerization technology, physical cross-linked macroporous cryogels based on gelatin and chitosan were synthesized at –12 ºC, –30 ºC and –70 ºC for application as carriers for cell cultures. The presence of functional groups was investigated by IR spectroscopy. The effect of temperature on physicochemical properties, such as pore volume, density, gel fraction and biodegradation of cryogels, was studied. The obtained results showed that the pore volume (up to 87.6 %) and the gel fraction (up to 80 %) increased, and the density (0.078 %) and pore sizes of cryogels decreased as the temperature decreased from –12 ºC to –70 ºC. The study of biodegradation showed that polymers had a more degradable property in relation to saline solution with an increase in the cryopolymerization temperature. The results of electron microscopy showed the porous morphology of the surfaces of the synthesized cryogels. The average pore size varied from 150 to 300 μm. The toxicity test showed that aqueous extracts from cryogels did not have a highly toxic effect on mesenchymal stem cells in the adipose rats tissue, since the cell viability was 55–75 %.
biocompatible , biopolymer , chitosan , cryogel , gelatin , non-toxic , porosity , tissue engineering
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