Abstract
Natural polymer chitosan acts as a bioblending material, which was obtained from dried prawn shell waste through the preparation of chitin and was characterized. Bioblend films of polyvinyl alcohol (PVA)/chitosan and PVA/polyethylene oxide (PEO) were prepared. Mechanical properties like tensile strength (TS), elongation at break (Eb) of chitosan film were studied. Five formulations were developed with 2‐ethyl 2‐hydroxy methyl 1,3‐propandiol tri‐methacrylate (EHMPTMA), a tri‐functional acrylic monomer and 2‐ethylhexyl acrylate (EHA), a mono‐functional acrylic monomer in the presence of photoinitiator Darocur‐1664 (2%). The films were soaked in those monomer formulations in dissimilar soaking times and irradiated under UV‐radiation at different radiation intensities for the improvement of the properties of chitosan film. The cured films were then subjected to various characterization tests like TS, Eb, polymer loading (PL), water uptake, gel content etc. The formulation, containing 25% EHMPTMA and 73% EHA showed the best performance at 10th UV passes of UV radiation for 4 min soaking time. The bioblend film PVA/chitosan performed better physico‐mechanical properties rather than PVA/PEO.
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