“…A number of detailed investigations have been carried out to understand various factors that control the properties and the structure of the PVA cryogel. Others, and particularly, Lozinsky and his colleagues have published a lengthy series of papers focusing on various parameters in PVA cryogelation, such as rate of chilling, number of freeze–thaw cycles, influence of additives, and etc . In general, it has been shown that the porosity and properties of PVA cryogel are influenced by the molar mass of PVA employed, initial polymer concentration, freezing temperature, cooling rate, freezing time, thawing rate, and the number of freeze/thaw cycles …”