Abstract
Abstract In this study, we have prepared 4-Hydroxycoumarin (4HC) doped Polyvinyl alcohol/Chitosan (PC4HC) blend films by solution casting technique. The Differential Scanning Calorimetry (DSC) and Fourier Transform Infrared (FT-IR) Spectroscopic analysis confirm that prepared blend films were interactive and miscible. To check the thermal stability, Thermogravimetric Analysis (TGA) was performed and obtained results show that all the PC4HC blend films were stable as much as Polyvinyl alcohol/Chitosan (PC) blend film. The tensile properties revealed that the addition of 4HC slightly altered the properties of the PC4HC blend films. The surface wettability (or hydrophilicity) was studied by the drop method using a contact angle meter. Although pure Polyvinyl alcohol (PVA), Chitosan (CS) and PC films were hydrophilic by nature, after the addition of 4HC, hydrophilic nature of the PC films changes to hydrophobic.
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