Supercritical impregnation and kinetic release of 2-nonanone in LLDPE films used for active food packaging

The impregnation of active compounds in polymeric matrices using supercritical carbon dioxide (scCO2) is a well-known technique, which is currently used to formulate controlled drug release materials. In this study, supercritical impregnation of 2-nonanone in linear low-density polyethylene (LLDPE) was done in order to prepare active polymer films to be used in food packaging. Impregnation tests were carried out in a high-pressure cell, at 313 K...