Physical aging of hydroxypropyl methylcellulose acetate succinate <i>via</i> enthalpy recovery
Yejoon Seo, Biao Zuo, Daniele Cangialosi, Rodney D. Priestley
Abstract
There are two regimes of physical aging behavior for HPMCAS: near- T g and well below T g . The latter regime exhibits significant thermodynamic evolution, despite the assumed kinetic stability.
Topics & Concepts
Amorphous solidGlass transitionPolymerMaterials scienceEnthalpyChemical engineeringRelaxation (psychology)Differential scanning calorimetryPolymer chemistryThermodynamicsOrganic chemistryChemistryComposite materialPsychologyPhysicsSocial psychologyEngineeringDrug Solubulity and Delivery SystemsMaterial Dynamics and PropertiesMicroencapsulation and Drying Processes