Migration of TiO2 from PET/TiO2 Composite Films Used for Polymer-Laminated Steel Cans in Acidic Solution

Nano-TiO2 is widely used as a commercial food contact material (FCM), which poses potential risks to food. Therefore, the migration of TiO2 crucial for safety FCM. Since PET/TiO2 composite films are layers producing polymer-laminated steel cans and majority beverages contained in acidic, it necessary study from acidic solutions. The 4% (v/v) acetic acid was studied through ICP-OES method. corrosion process that occurred during using electrochemical impedance spectroscopy (EIS). morphology Ti nanoparticles measured by SEM, TEM, dynamic light scattering (DLS) techniques. results indicate that, at temperature 60 °C, maximum concentration 0.32 mg/kg. particles released unstable tend aggregate simulated material, with most being present form particles. does not follow Fick law diffusion but rather conforms Weibull model based on non-Fick diffusion.