chapter  7
14 Pages

Influence of Polyhydroxybutyrate on Properties of Composition Films on the Basis Hydrophobic and Hydrophilic Polymers

Abstract ..................................................................................................112 7.1 Introduction ...................................................................................112 7.2 Experimental .................................................................................113 7.3 Results and Discussion .................................................................115 7.4 Conclusion ................................................................................... 123 Keywords .............................................................................................. 123 References ............................................................................................. 123

ABSTRACT

Mechanical characteristics and water permeability of films on the basis of mixtures of low-density polyethylene (LDPE)–poly(3-hydroxybutyrate) (PHB) and polyvinylalcohole (PVA)–PHB depending on their composition were investigated. It was shown that the additive of PHB increments water permeability of a polymeric matrix, but at a major dosage of PHB the permeability of films can be reduced because of ability of PHB to fix water. It was determined by differential scanning calorimetry (DSC), polarization infrared (IR) spectroscopy, wide-angle X-ray scattering (WAXS), and small-angle X-ray scattering (SAXS) experiments that there is a connection between structural architecture of films at crystalline (or at molecular) level with water permeability and mechanical performances.