Journal of Macromolecular Science Part B · 1990 · 28 citations · 10 references
Natural SciencesChemical EngineeringChemistryPolymer ChemistryPolymer EngineeringPolymer MaterialsPolymer BlendsPolymer Physical ChemistryPolymer ProcessingPolymer SolutionsPolymer SynthesisPolymerization ChemistryCopolymer Composition AnalysisCopolymerizationInfrared Absorption SpectroscopyMelt BehaviorMelt BlendingPolyethylene TerephthalatePolymer BlendingPolymer Copolymer Composition Analysis
Abstract Copolymers made by ester exchange reaction have been obtained from poly(ethylene terephthalate) (PET)/poly(bis-phenol-A carbonate) (PC) blends during melt mixing. The copolyesters were isolated by thin-layer chromatography (TLC) and identified by infrared spectroscopy. It was found that the quantity of copolymer formed was increased by the temperature and duration of melt mixing. The PET/PC blend was found to react at 270°C within 10 min, as detected by TLC. After 60 min, the pure PC had disappeared. The miscibility of PET/PC blends was found to be markedly aided by the addition of as little as 2% of the copolymer isolated by TLC.
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Jacques Devaux, P. Godard, J. P. Mercier et al. · Journal of Polymer Science Polymer Physics Edition · 1982 · 178 citations