Bulletin of the Chemical Society of Japan · 1972 · 14 citations · 6 references
Natural SciencesChemistryMaterials SciencePhysical ChemistryPolymer ChemistryThermal AnalysisMixture ThermodynamicsPolymer BlendsPolymer CharacterizationPolymer Physical ChemistryPolymer PhysicsPolymer ThermodynamicsBlend CompatibilityGlass TransitionGlass Transition TemperatureGlass Transition Temperature DeterminationPolymer Blend CompatibilizationPolymer BlendingPolymer CompatibilityThermal Expansion
Abstract Polymer mixtures of poly(vinyl nitrate) (PVONO2), and poly(vinyl acetate) (PVOAc), which had previously been concluded to be compatible with each other, were investigated by the dilatometric method. As a result, a characteristic behavior of the mixtures was observed. Each mixture showed a single glass-transition temperature (Tg) over the whole range of composition; this temperature was higher than those of pure polymers in the middle region of composition. The transition temperatures of the mixtures obeyed a modified Gordon-Taylor expression. The thermal expansion coefficients of the mixtures are discussed in relation to the effect of blending.
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Norman Bekkedahl · Journal of research of the National Bureau of Standards · 1949 · 144 citations · Full text