Browsing by Keyword "Permeability"
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Item A dynamic data driven application system for real-time simulation of resin transfer moulding processes(2022-03) Garate, Gorka; Harismendy, Isabel; Echeverria-Altuna, Oihane; Estévez, Julián; Tecnalia Research & Innovation; POLIMEROSThis paper presents a numerical solution to optimize RTM processes based on a DDDAS methodology, taking permeability as stochastic. The model proposed in this investigation allows real-time accurate prediction of the filling rate by adjusting the parameters with the on-line captured process data. The suitability of the proposed model was tested and validated under different process parameters variations like pressure and preform permeability.Item Effect of the unsaturation degree and concentration of fatty acids on the properties of WPI-based edible films(2007-02) Fernández, Laura; De Apodaca, Elena Díaz; Cebrián, Marta; Villarán, M. Carmen; Maté, Juan I.; Alimentación SostenibleThe incorporation of lipids into hydrophilic protein films allows the modification of their barrier properties, improving its commercial application as preservation medium on different foods. The main objective of this study was to develop films from Whey Protein Isolate (WPI) together with saturated and unsaturated fatty acids and to determine the effect of concentration and unsaturation degree on surface tension of the coating solution and on water vapor permeability (WVP), mechanical properties (tensile strength and elongation at break), and opacity, of the films. The results obtained showed that surface tension was significantly decreased by adding unsaturated fatty acids (oleic and linoleic acid), whereas the greatest effect on WVP reduction was achieved with stearic acid. The addition of stearic acid resulted in a decrease of elongation and an increase of tension strength; however unsaturated fatty acid content did not modify the elongation and slightly reduce a tensile strength.