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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Detalles Bibliográficos
Autores principales:	Schmalko, Miguel E., Alzamora, Stella Maris
Publicado:	2005
Materias:	Bark Physical properties Xylem Yerba maté Desorption Drying Isotherms Mathematical models Moisture Phase equilibria Shrinkage Sorption Water Halsey model Composite materials Croton ovalifolius Ilex Ilex paraguariensis
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02608774_v66_n4_p455_Schmalko http://hdl.handle.net/20.500.12110/paper_02608774_v66_n4_p455_Schmalko
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_02608774_v66_n4_p455_Schmalko
record_format	dspace
spelling	paper:paper_02608774_v66_n4_p455_Schmalko2023-06-08T15:22:34Z Modelling the drying of a twig of "yerba maté" considering as a composite material: Part I: Shrinkage, apparent density and equilibrium moisture content Schmalko, Miguel E. Alzamora, Stella Maris 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. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02608774_v66_n4_p455_Schmalko http://hdl.handle.net/20.500.12110/paper_02608774_v66_n4_p455_Schmalko
institution	Universidad de Buenos Aires
institution_str	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, Miguel E. Alzamora, Stella Maris 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.
author	Schmalko, Miguel E. Alzamora, Stella Maris
author_facet	Schmalko, Miguel E. Alzamora, Stella Maris
author_sort	Schmalko, Miguel 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
publishDate	2005
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02608774_v66_n4_p455_Schmalko http://hdl.handle.net/20.500.12110/paper_02608774_v66_n4_p455_Schmalko
work_keys_str_mv	AT schmalkomiguele modellingthedryingofatwigofyerbamateconsideringasacompositematerialpartishrinkageapparentdensityandequilibriummoisturecontent AT alzamorastellamaris modellingthedryingofatwigofyerbamateconsideringasacompositematerialpartishrinkageapparentdensityandequilibriummoisturecontent
_version_	1768543991407575040

Modelling the drying of a twig of "yerba maté" considering as a composite material: Part I: Shrinkage, apparent density and equilibrium moisture content

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