Effect of poly(ethylene glycol) on the ultrastructure and physicochemical properties of the poly(3-hydroxybutyrate)статьяИсследовательская статья
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Дата последнего поиска статьи во внешних источниках: 4 декабря 2017 г.
Аннотация:Принято к опубликованию в 2017 г., имеется подтверждающее письмо.
Chemical conjugation or blending with poly(ethylene glycols) (PEGs) are established procedures to facilitate solubilisation of hydrophobic compounds. The techniques of BioPEGylation and blending with PEG have been applied to poly(3-hydroxybutyrate). In this work we examine the properties of copolymer poly(3-hydroxybutyrate-co-poly(ethylene glycol)) (PHB-PEG) and composite material polyhydroxybutyrate with poly(ethylene glycol) (PHB+PEG) compared with homopolymer poly(3-hydroxybutyrate) (PHB). It was found that copolymer has significally different mechanical and thermophysical properties with respect to pure PHB: increasing crystallinity but decreasing Young modulus and elongation to break. PHB+PEG composite has a clearly expressed hydrophilic properties. Moreover, the creation of the composite, and a copolymer of PHB with PEG results in a change in surface morphology of ultrafine films. Hybrid characterization studies are in their infancy, but results to date suggest that PHA–PEG hybrids have subtle, but significant, differences in their physiochemical and material properties as a consequence of the PEGylation.