Study of the Swelling Characteristics of Mixtures Based on Biodegradable Poly-3-Hydroxybutyrate and Butadiene-Nitrile Rubber

Abstract

The features of the swelling dynamics of elastomeric two-component compositions based on the biodegradable polymer poly-3-hydroxybutyrate (P3HB) and butadiene-nitrile rubber NBR 28AMN in water are studied. The relationship between the swelling processes and the structures of the samples subjected to hydrolysis was studied using the method of differential scanning calorimetry.
As a result of the work, the correlation of the degree of swelling of composites with the content of rubber in the polymer matrix was established. According to the obtained thermograms, the features of swelling of the components of the composition and, as well as the processes of formation of amorphous and crystalline structures of P3HB, were compared for samples of compositions with different elastomer content after exposure to water.