Production and Characterization of Polyvinyl Alcohol-Chitosan-Carrageenan Biocomposite Films Containing St. John's Wort (Hypericum perforatum) Oil
This study aims to develop chitosan/poly(vinyl alcohol)/carrageenan biocomposite films incorporating Hypericum perforatum (St. John’s wort) oil (0.1–5%, w/w) and to evaluate the influence of oil incorporation on their structural, mechanical, and dielectric properties. FTIR analysis confirmed strong hydrogen bonding amo...