One-step synthesis of eco-friendly boiled rice starch blended polyvinyl alcohol bionanocomposite films decorated with in situ generated silver nanoparticles for food packaging purpose.
The study reports a one-step preparation of polyvinyl alcohol/boiled rice starch blend film fabricated with in situ generated silver nanoparticles (PVA/BRS/sAgNPs) formed in the presence of sunlight irradiation. The bionanocomposite appeared to have dark brown color with a characteristic surface plasmon resonance peak at 439 nm. Further characterization has confirmed the presence of physical interactions among the components PVA, BRS and sAgNPs. Compared to the control PVA, the nanocomposites showed improved mechanical and optical properties with decreased water sensitivity. Presence of boiled rice starch and sAgNPs were also found to influence the light transmittance of composite film. Moreover, PVA/BRS/sAgNPs film was found to have superior barrier property against environmental microorganisms. Biodegradation of the composite films was studied by indoor soil burial test and was assessed by visual appearance, weight loss and FTIR analysis. Interestingly, both the PVA/BRS and PVA/BRS/sAgNPs films proved to be biodegradable and hence have promising application as cost effective food packaging material with the latter having marked antimicrobial property.
['Mathew|Shiji|S|', 'Jayakumar|Aswathy|A|', 'Kumar|Veena P|VP|', 'Mathew|Jyothis|J|', 'Radhakrishnan|E K|EK|']
D001672:Biocompatible Materials D000080122:Edible Films D018857:Food Packaging D055595:Mechanical Phenomena D053768:Metal Nanoparticles D012275:Oryza D011142:Polyvinyl Alcohol D012834:Silver D012995:Solubility D013057:Spectrum Analysis D013213:Starch D013818:Thermogravimetry
Rice starch Food packaging Biodegradable