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Blends of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and poly(ɛ-caprolactone) (PCL) have been produced by melt blending in the presence of supercritical CO 2 . Infrared spectroscopy has shown that supercritical CO 2 can induce melting in PHBV at temperatures below the melting point. The miscibility of the PCL–PHBV blend system produced by both mechanical and supercritical...
The interaction of a new hydrocarbon (HC) and fluorocarbon (FC) co-modified poly(acrylic acid), SA-1-FX14-1, with a HC nonionic surfactant, Np7.5, was investigated by rheological measurements. Its solution property was compared with HC or FC modified counterpart. It was found that the incompatibility between HC and FC groups in the micellization process was improved in the solution of SA-1-FX14-1...
Blends of conjugated polymers with ultrahigh molecular weight polyethylene (UHMW-PE) containing up to 30% (w/w) of poly(2-butyl, 5-(2'-ethyl-hexyl)-1,4-phenylene vinylene) (BuEH-PPV) have been prepared by gel processing. The microstructure of both pristine and oriented (tensile drawn) films were studied using optical microscopy (365nm ultraviolet illumination), X-ray diffraction and transmission electron...
The polymer chain distribution in solution-cast thin films of poly(2-methoxy-5-(2 -ethylhexyloxy)-1,4-phenylene vinylene) (MEH-PPV) has been investigated by X-ray diffraction. The results show that regardless of the solvent, chain orientation in cast films is anisotropic; the PPV backbones and the planes defined by the benzene rings within the PPV backbones are predominantly parallel to the film...
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