Isotermas de umidade de equilí­brio de materiais têxteis

Luiza Helena Costa Dutra Sousa; Nehemias Curvelo Pereira; Oswaldo Curty da Motta Lima; Erica Vagetti Fonseca

doi:10.4025/actascitechnol.v23i0.2764

Equilibrium moisture isotherms of textiles materials

Authors

Luiza Helena Costa Dutra Sousa UEM
Nehemias Curvelo Pereira UEM
Oswaldo Curty da Motta Lima UEM
Erica Vagetti Fonseca UEM

DOI:

https://doi.org/10.4025/actascitechnol.v23i0.2764

Keywords:

secagem, isotermas têxteis, isotermas de equilíbrio, algodão

Abstract

Knowledge on thermal characteristics of materials is very important for developing of a drying process in a more economic and viable way. The literature presents isotherms of several natural fibers, as cotton, wool, hemp, jute, sisal and silk (Foust et al., 1982; Gomide, 1991), and these isotherms have a very similar and evident behavior. This work presents a reliable database of textile materials isotherms, besides experimental cotton sarja data, obtained by the static method and using saline solutions, at the temperatures of 28, 35 and 70ÂºC. The samples´ equilibrium moisture was obtained after 21 days and dry basis humidity was determined by the stove method. Results were appraised by means of models given in the literature. Henderson´s model seems to be the most representative for isotherms of the natural fibers under analysis

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Author Biography

Luiza Helena Costa Dutra Sousa, UEM

graduada em Engenharia Mecânica pela Universidade Federal de Itajubá - UNIFEI (1985), mestrado em Engenharia Química pela Universidade Estadual de Maringá - UEM (1996) e doutorado em Engenharia Química pela Universidade Estadual de Maringá - UEM (2003). Atualmente é Professor Adjunto da Universidade Estadual de Maringá. Possui experiência na área de Engenharia Química, com ênfase em têxteis, borracha e papel, atuando principalmente com os seguintes temas: secagem e transferência de calor. Na área de Engenharia Mecânica atua em projetos mecânicos e elementos de máquinas Currículo Lattes

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Published

2008-05-05

How to Cite

Costa Dutra Sousa, L. H., Pereira, N. C., da Motta Lima, O. C., & Fonseca, E. V. (2008). Equilibrium moisture isotherms of textiles materials. Acta Scientiarum. Technology, 23, 1363–1368. https://doi.org/10.4025/actascitechnol.v23i0.2764

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Issue

Vol. 23 (2001)

Section

Chemical Engineering

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0.8

2019CiteScore

36th percentile