polyurethaneurea

The influence of the model biological medium 199 on the structure and properties of film materials with tiamulin fumarate based on polyurethaneurea containing in its structure the hydrophilic fragments of the copolymer of N-vinylpyrrolidone with vinyl acetate and vinyl alcohol has been investigated. According to IR spectroscopy, under the influence of the biological medium 199 there are processes of biodegradation of polymer materials which are accompanied by a decrease in the intensity of the absorption band νС=О of vinylpyrrolidone ring.