The Relationship Between the Glass Transition Temperature and Water Vapor Absorption by Poly(vinylpyrrolidone)

Abstract

Water associated with amorphous solids is known to affect significantly the physical and chemical properties of dosage form ingredients. An analysis of water vapor absorption isotherms of poly(vinylpyrrolidone) measured in this and other laboratories, over the range −40 to 60°C, along with the measurement of the glass transition temperature of poly… (More)
DOI: 10.1023/A:1015834715152

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