Radiation reflection and absorption of materials based on polyvinyl alcohol hydrogels

Abstract

Regularities of reflection and absorption of microwave radiation by water during its freezingthawing have been experimentally established. Characteristics of microwave energy attenuation by polyvinyl alcohol hydrogels, as well as changes of named parameters due to structure transformation induced by conversion of hydrogels into cryogels at subzero treatment, are given. Facilities of the decrease of cryogels radio-transparency by modifying them with water solutions of ferroelectrics have been shown.