Synergistic evolution of stable bioactivity and better mechanical strength in polyvinyl alcohol and sweet lime peel film

The present study discloses the evolution of bioactivity with improved chemical stability in the composite film of polyvinyl alcohol (PVA) and sweet lime peel (SLP) powder along with biodegradability and improved hardness due to the structural miscibility between constituent’s polymer during solution blending. The evolved structure, different properties, bioactivity, and synergistic effect between PVA and SLP were established with the help of spectrochemical results, microscopic image, and physio-mechanical properties, i.e. thickness, chemical stability, water vapor transmission rate, heat seal-ability, and shelf-life. The result reveals the long-term presence of the bioactive compound of SLP by 200%, antimicrobial nature against S. aureus and E. coli, improved tensile strength, and heat stability in the reported film. Further, the prepared film of SLP and PVA with optimum properties and 0.12 mm thickness was used for packing sprouts as an alternative to the currently used non-biodegradable film with a comparable life span of seven days.