Effect of NaCl and KCl solutions on deformation of PVA hydrogel– chemo-mechanical coupling (in English)
Polimery 2020, No 1,44
This paper provides results of studies of chemically induced deformation of PVA [poly(vinyl alcohol)] hydrogels due tointeraction with diffusing NaCl and KCl solutions. The experimental studies were carried out in the specially modified reservoir system, where simultaneously registration the changesin the reservoir salt concentration and the deformation under chemical load were applied. The linear model is used to determine the chemo-mechanical coupling parameter. The results showed that PVA hydrogels deform in the presence of salts in pore fluid andthe higher the salt concentration the greater deformation is observed.