Modelling the drying of a twig of "yerba maté" considering as a composite material: Part I: Shrinkage, apparent density and equilibrium moisture content
Physical properties for bark and xylem of twigs of yerba maté were analyzed to use them in a mathematical model for describing the drying of composite materials. Shrinkage coefficient and apparent density depended on moisture content and were found to be different for both regions. Equilibrium moist...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_02608774_v66_n4_p455_Schmalko |
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todo:paper_02608774_v66_n4_p455_Schmalko2023-10-03T15:12:15Z Modelling the drying of a twig of "yerba maté" considering as a composite material: Part I: Shrinkage, apparent density and equilibrium moisture content Schmalko, M.E. Alzamora, S.M. Bark Physical properties Xylem Yerba maté Desorption Drying Isotherms Mathematical models Moisture Phase equilibria Physical properties Shrinkage Sorption Water Bark Halsey model Xylem Yerba maté Composite materials Croton ovalifolius Ilex Ilex paraguariensis Physical properties for bark and xylem of twigs of yerba maté were analyzed to use them in a mathematical model for describing the drying of composite materials. Shrinkage coefficient and apparent density depended on moisture content and were found to be different for both regions. Equilibrium moisture contents for different water activity values were measured at temperatures between 30 and 90 °C. Desorption moisture isotherms varied with the type of material and with temperature. Between 30 and 60 °C, the GAB model exhibited the better fit to the sorption data, while in the range 70-90 °C, experimental data were better described by the Halsey's model. Equilibrium moisture content between xylem and bark could be described through a potential function, which did not depend on temperature. © 2004 Elsevier Ltd. All rights reserved. Fil:Schmalko, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Alzamora, S.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02608774_v66_n4_p455_Schmalko |
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Universidad de Buenos Aires |
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I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Bark Physical properties Xylem Yerba maté Desorption Drying Isotherms Mathematical models Moisture Phase equilibria Physical properties Shrinkage Sorption Water Bark Halsey model Xylem Yerba maté Composite materials Croton ovalifolius Ilex Ilex paraguariensis |
| spellingShingle |
Bark Physical properties Xylem Yerba maté Desorption Drying Isotherms Mathematical models Moisture Phase equilibria Physical properties Shrinkage Sorption Water Bark Halsey model Xylem Yerba maté Composite materials Croton ovalifolius Ilex Ilex paraguariensis Schmalko, M.E. Alzamora, S.M. Modelling the drying of a twig of "yerba maté" considering as a composite material: Part I: Shrinkage, apparent density and equilibrium moisture content |
| topic_facet |
Bark Physical properties Xylem Yerba maté Desorption Drying Isotherms Mathematical models Moisture Phase equilibria Physical properties Shrinkage Sorption Water Bark Halsey model Xylem Yerba maté Composite materials Croton ovalifolius Ilex Ilex paraguariensis |
| description |
Physical properties for bark and xylem of twigs of yerba maté were analyzed to use them in a mathematical model for describing the drying of composite materials. Shrinkage coefficient and apparent density depended on moisture content and were found to be different for both regions. Equilibrium moisture contents for different water activity values were measured at temperatures between 30 and 90 °C. Desorption moisture isotherms varied with the type of material and with temperature. Between 30 and 60 °C, the GAB model exhibited the better fit to the sorption data, while in the range 70-90 °C, experimental data were better described by the Halsey's model. Equilibrium moisture content between xylem and bark could be described through a potential function, which did not depend on temperature. © 2004 Elsevier Ltd. All rights reserved. |
| format |
JOUR |
| author |
Schmalko, M.E. Alzamora, S.M. |
| author_facet |
Schmalko, M.E. Alzamora, S.M. |
| author_sort |
Schmalko, M.E. |
| title |
Modelling the drying of a twig of "yerba maté" considering as a composite material: Part I: Shrinkage, apparent density and equilibrium moisture content |
| title_short |
Modelling the drying of a twig of "yerba maté" considering as a composite material: Part I: Shrinkage, apparent density and equilibrium moisture content |
| title_full |
Modelling the drying of a twig of "yerba maté" considering as a composite material: Part I: Shrinkage, apparent density and equilibrium moisture content |
| title_fullStr |
Modelling the drying of a twig of "yerba maté" considering as a composite material: Part I: Shrinkage, apparent density and equilibrium moisture content |
| title_full_unstemmed |
Modelling the drying of a twig of "yerba maté" considering as a composite material: Part I: Shrinkage, apparent density and equilibrium moisture content |
| title_sort |
modelling the drying of a twig of "yerba maté" considering as a composite material: part i: shrinkage, apparent density and equilibrium moisture content |
| url |
http://hdl.handle.net/20.500.12110/paper_02608774_v66_n4_p455_Schmalko |
| work_keys_str_mv |
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1807321923008331776 |