Methods for probe analysis of EPR-spectroscopy, differential scanning calorimetry (DSC) and the X-ray analysis (XRD) at high angles, as well as UV-spectroscopy examined the molecular dynamics, structure, diffusion, mechanical properties, ozone oxidation of copolymer of 3-hydroxybutyrate and 3-gidroksivaleratom (PGBV) and compositions with a segmented polyurethane (SPEU. Shows that the limited time (3, 5 h) effect of water on mixed composition of PGBV/SPÈU at 40° C does not significantly effect the dynamics of rotating probe (EPR) and crystallinity PGBV (DSC). However, the water-temperature effects with 70° С is accompanied by increasing the molecular mobility of the probe in the system. According to DSC the crystallinity of PGBV and density of crystals is increasing.
биодеградируемые композиции, кристалличность, зондовый метод ЭПР, ДСК, РСА, озон, вода, время корреляции, хлоргексидин, полиэфируретан, диффузия, молекулярная подвижность, biodegradable composition, crystallinity probe EPR, DSC, XRD, ozone, water, the correlation time, chlor-hexidine, polyester urethane, diffusion, molecular mobility
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