blend

Synthesis and Tailoring the Optimization and Dielectric Properties of PMMA/PEG/Barium Titanate Hybrid Nanostructures for Energy Storage and Electronics Applications

The present work aims to improve the dielectric properties of poly-methyl methacrylate (PMMA)- polyethylene glycol (PEG) blend doped with barium titanate (BaTiO3) nanoparticles to be useful in electronics and dielectric fields. The PMMA/PEG/BaTiO3 nanocomposite films were fabricated by using the casting method. The morphological and dielectric characteristics of PMMA/PEG/BaTiO3 nanocomposite films were tested. The dielectric characteristics were examined by LCR meter at frequencies ranging from 100 Hz to 5 MHz.

Study of the biodegradation of polyhydroxybutyrate, polylactide, and their blend under the influence of microorganisms using Х-ray diffraction analysis

The changes in the crystal structure of polyhydroxybutyrate, polylactide, and their blends during biodegradation under the influence of bacteria and fungi were studied using X-ray diffraction analysis. It was found that microorganisms induce structural transformations in polymers, which occur without significant mass loss of the samples. X-ray diffraction analysis revealed that biodegradation is a complex multifactorial process that depends on the nature of the polymer and microorganisms and is characterized by microstructural changes in the film samples. 

Morphology and Properties of Blends of Poly(3-hydroxybutyrate) with Poly(vinyl alcohol)

The structure of extruded films based on blends of polyvinyl alcohol and poly(3-hydroxybutyrate) (PHB) was studied for various compositions. The methods of DSC and X-ray analysis were used. As the phase-sensitive characteristics of the composite films, diffusion and water vapor permeability were also investigated. In addition, the tensile modulus and relative elongation-at-break were measured. Changes in the glass transition temperature of the blends and constant melting points of the components show their partial compatibility in intercrystallite regions.