Thermal analysis of polymer blends and double layer by DSC

Abstract

Differential Scanning Calorimetry (DSC) is considered one of the most adaptable thermal analysis characterization techniques. It can be applied to polymers and their blends, composites, multilayer to study various thermodynamic processes like glass transition temperature (Tg), specific heat capacity and other related kinetic properties and also clarify the material structure, morphology and crystallinity of polymers. In the present paper we have reported thermal analysis of Polymethyl methacrylate (PMMA), Polyvinylidene fluoride (PVDF), Polysulfone (PSF), PVDF-PSF blend and PVDF-PMMA double-layer samples using DSC technique. Attempts have been made to calculate the Tg and interpret the corresponding changes that have been observed on blending PVDF with PSF and double-layer formation with PMMA. Blending of PVDF with PSF results the change in Tg of PSF and the occurrence of a single peak confirms the proper miscibility of the two polymers. DSC plot of double layer also proved to be in confirmation about the formation of PVDF-PMMA double layer and demonstrated a significant change in its thermal behavior.