Influence of Temperature Effects on the Structure and Physico-Mechanical Properties of Filled Gels of Polyvinyl Alcohol

Polyvinyl Alcohol Cryogels as the Matrix for Biomaterials

“…In Ukhartseva [10] it was shown experimentally that the different film formation temperatures lead to a change in the structure of the PVA gels. At subzero temperatures, the presence of numerous micro-and macropores, formed by ice crystals, is noted.…”

“…Cryotreatment leads to structure formation of the gel, which is converted from the soluble state to the insoluble state [3]. Freezing at a temperature ranging from −5 to Plasticheskie Massy, No.…”

“…On exposure of aqueous solutions of PVA to low temperatures (below the temperature of phase transition of the solvent), cryolytic processes develop in the system, as a result of which the degradation and structure formation of macromolecules proceed simultaneously, and crosslinks are formed between them [5]. The nature of the polymer and also the temperature and time regimes of freezing and defrosting determine the properties [3], structure [6], and surface micromorphology [7] of the cryogels obtained. PVA cryogels are used as the support of dense culture media, the advantages of which are the absence of gel phase thinning and the possibility of controlling elasticity [8].…”