Effects of plasticizer concentration and type on moisture content in gelatin films

In this short work, it was evaluated the moisture absorption and loss (desorption) in gelatin films containing different plasticizer types and contents. A special desiccator was developed for moisture control. An alternative microwave method was used for this study. The results show that the films containing glycerol presented greater water absorption in comparison to films containing ethyleneglycol, diethyleneglycol and polypropyleneglycol, which was attributed to the higher hydrophilic nature of the glycerol.