Comparison of the Physical and Mechanical Properties of Cryogels Based on Polyvinyl Alcohol with the Addition of Carbon Nanotubes with DEE-Stabilized Bovine Pericardium

Physical and mechanical properties of PVA-CNT cryogels obtained by cryostructuring before and after lyophilization, uniaxial extension, elastic hysteresis, numerical modeling, and flow testing were evaluated. An increase in the tensile strength and maximum elongation of hydrogels after lyophilization was demonstrated; however, their tendency to creep under constant long-term loads was revealed. PVA-CNT and PVA-CNT-L cryogels are promising as materials for polymer heart valves, but their tendency to creep limits their use without additional modification.