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 (T_g), 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 T_g 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 T_g 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.

差示扫描量热法（DSC）被认为是最适合的热分析表征技术之一。它可以应用于聚合物及其共混物，复合材料，多层材料，以研究各种热力学过程，例如玻璃化转变温度（T _g），比热容和其他相关的动力学特性，还可以阐明聚合物的材料结构，形态和结晶度。在本文中，我们报告了使用DSC技术对聚甲基丙烯酸甲酯（PMMA），聚偏二氟乙烯（PVDF），聚砜（ PSF），PVDF-PSF共混物和PVDF-PMMA双层样品进行的热分析。已尝试计算T _g并解释了将PVDF与PSF混合以及与PMMA形成双层时观察到的相应变化。PVDF与PSF的共混会导致PSF的T _g发生变化，单个峰的出现证实了这两种聚合物的适当混溶性。双层的DSC图也证实了PVDF-PMMA双层的形成，并证明了其热行为的显着变化。