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Several polypropylene-g-polystyrene (PP-g-PS) and polypropylene-g-poly(n-butyl acrylate) (PP-g-PnBA) graft copolymers with well-defined molecular structures, basing on the same PP-Br precursor, were synthesized via a combination of metallocene-catalyzed polymerization and ATRP. The structure–property relationships of the resultant graft copolymers were systematically investigated. The crystallization...
In this study, in situ polymer–fibrillar blends of polypropylene (PP)/polytetrafluoroethylene (PTFE) are prepared. Dynamic oscillatory shear experiments confirm that the PTFE elongates into fibrils during blending and forms a physical network of entanglements in the melt which results in gel-like properties. Uniaxial extensional flow experiments show strain-induced hardening behaviour. CO2 solvency...
Poly(imino imino ketone) (PIIK) was synthesized via palladium-catalyzed C–N cross coupling reaction of 1,4-bis-(4′-bromobenzoyl) benzene and p-phenylenediamine. In view of its good thermal stability and solubility, PIIK foams with low density between 80 mg/cm3–350 mg/cm3 have been prepared via thermal induced phase separation and freeze-drying technology. The PIIK foam possessed high glass transition...
A methodology for blending foam of poly (lactic acid) (PLA)/poly (ethylene terephthalate glycol-modified) (PETG) was proposed. PLA/PETG blends were prepared through a melt blending method, using multiple functionality epoxide as reactive compatibilizer. The effects of blending ratio and compatibilizer content on the dispersion morphology, molecular structure, mechanical properties, and rheological...
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