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Abstract
The migration characteristics of the UV stabilizer Tinuvin 234 (2-(2H-benzotriazol-2-yl)-4,6-bis (1-methyl-1-phenylethyl)phenol) into food simulants has been measured from polyethylene terephthalate (PET) using HPLC with UV detection. Ethanol/water, isooctane and a fractionated coconut oil simulant (Miglyol®) were used as food simulating solvents. The migration characteristics were measured at temperatures in the range of 40–70°C. Diffusion coefficients were determined to be in the range of 1 × 10−14 cm2 s−1 to 1 × 10−18 cm2 s−1. At 40°C, the amount of migration into 95% ethanol after 10 days was 2 μg dm−2. Isooctane is determined to be a good fatty food simulant that provides similar results for PET to those of fatty foods.
