Study of the migration of additives from plasticized PVC

Abstract

The aim of this paper is to study the interactions between packaging and food. For that purpose, additives were first characterized. Kinetic studies of their specific migrations have been carried out by using different analytical methods such as gas chromatography, Fourier transform infrared spectroscopy, atomic absorption spectrometry and differential scanning calorimetric analysis. The influence of various parameters such as temperature, agitation, nature of food simulant and initial concentration of plasticizer was considered.

Kinetic Study of the Specific Migration of an Organotin Heat Stabilizer from Rigid Poly(vinyl chloride) into Food Simulants by FTIR Spectroscopy

“…As is mentioned in the literature, the migration is more important at higher temperatures [19,21]. It is obvious that the mobility of the migrant molecules increases with increasing temperature, since the highest migration is obtained at 70 C. In fact, the diffusion is favored in hexane at 4 and 40 C. This is due to the better solubility of Irgastab 17 MOK in hexane.…”

“…Indeed, several works showed that the migration increases with the temperature [19][20][21]. It is to be noted that the obtained results are due to the effects of temperature rather than the effects of glass transition temperature (T g ) as rigid PVC exhibits a T g of about 80 C [3].…”

“…In fact, until now, migration of plasticizers into food and their simulants has been the subject of many investigations [10][11][12][13][14][15][16][17][18] but few studies were carried out on the migration of other additives [19][20][21]. The most used method for the experimental study of migration phenomena is gas chromatography (GC) [5][6][7][8][9][10][11][12][13][14][15][16][17][18] which is costly and time-consuming.…”

Specific migration of IRGASTAB 17 MOK and DBP from rigid and plasticized poly(vinyl chloride) into organic liquids

“…It can be observed that the additive migration is related to the temperature. As it is mentioned in the literature, the migration is more important at higher temperatures [11][12][13][14]. It is obvious that the mobility of the migrant molecules increases with enhancement temperature, since the highest migration is obtained at 70 °C.…”

“…Therefore, the real migration of DBP would be hidden in hexane. The presence of the plasticizer in films accelerates heat stabilizer migration [9,11,12,14], obtained rates migration were 2.25 times higher than rigid films FR 4.5 .…”