Influence study of (Vitamin C) absorption on the mechanical properties of (Poly ethylene terphthalate) drinking bottles

:in this research, the study shows the effect of vitamin c absorption by poly ethylene terphthalate (pet) bottles on mechanical properties of (pet) bottles that was investigated through tensile test. the polyethylene terphthalate bottle containing orange drinks with ( 50ppm ) initial concentration of vitamin c were stored for about three months at ( 10, 25 , 50 ºc ) and the mechanical properties ( tensile strength , modulus of elasticity and elongation ) of poly ethylene terphthalate bottles were measured periodly during the storage time . the effect of vitamin c on the mechanical properties of (pet ) bottles was compared between of the (pet ) bottles containing orange drinks with (50ppm ) vitamin c and the (pet ) bottles containing orange drink without concentration additional of vitamin c solution , maximum effect of vitamin c on mechanical properties of (pet) bottles was observed on the samples stored at 50ºc that could be represents to the high amount of absorbedvitamin c at high storage temperatures . it was also found that tensile strength and modulus of elasticity of ( pet ) bottles decreased with the absorption degree of vitamin c, while the elongation increased