| The absorption of organic volatile compounds by plastic films was investigated, and the influence of the absorption of these compounds on the mechanical properties of the plastic films as a function of sorbed concentration levels was evaluated. Sample strips of polyethylene (LDPE), ethylene vinyl alcohol copolymer (EVOH) and co-polyester (Co- PET) were immersed in juice. Absorption of d-limonene by Co- PET was significantly lower in comparison to that of the other two films.; The sorption of d-limonene by plastics affected the (a) modulus of elasticity (EVOH, Co- PET), (b) yield stress (EVOH), (c) stress at 100% elongation (LDPE, EVOH), (d) heat seal strength (LDPE), and (e) impact resistance (EVOH, LDPE). The plastics varied their properties due to sorption of flavor component. |
