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https://doi.org/10.5552/drvind.2020.1905

Hygrothermal Treatment of Tepa (Laureliopsis philippiana Looser) Fibers: Effects on Chemical and Physical Properties

Rommel Crespo Gutiérrez   ORCID icon orcid.org/0000-0002-4013-6362 ; Escuela de Ingeniería Forestal, Facultad de Ciencias Ambientales, Universidad Técnica Estatal de Quevedo, Quevedo- Ecuador
Marco Torres Uribe ; Instituto de Tecnología de Productos Forestales, Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, Valdivia, Chile
Hernán Poblete Wilson ; APA (The Engineered Wood Association), Valdivia-Chile

Puni tekst: engleski, pdf (520 KB) str. 69-77 preuzimanja: 175* citiraj
APA 6th Edition
Crespo Gutiérrez, R., Uribe, M.T. i Wilson, H.P. (2020). Hygrothermal Treatment of Tepa (Laureliopsis philippiana Looser) Fibers: Effects on Chemical and Physical Properties. Drvna industrija, 71 (1), 69-77. https://doi.org/10.5552/drvind.2020.1905
MLA 8th Edition
Crespo Gutiérrez, Rommel, et al. "Hygrothermal Treatment of Tepa (Laureliopsis philippiana Looser) Fibers: Effects on Chemical and Physical Properties." Drvna industrija, vol. 71, br. 1, 2020, str. 69-77. https://doi.org/10.5552/drvind.2020.1905. Citirano 29.11.2021.
Chicago 17th Edition
Crespo Gutiérrez, Rommel, Marco Torres Uribe i Hernán Poblete Wilson. "Hygrothermal Treatment of Tepa (Laureliopsis philippiana Looser) Fibers: Effects on Chemical and Physical Properties." Drvna industrija 71, br. 1 (2020): 69-77. https://doi.org/10.5552/drvind.2020.1905
Harvard
Crespo Gutiérrez, R., Uribe, M.T., i Wilson, H.P. (2020). 'Hygrothermal Treatment of Tepa (Laureliopsis philippiana Looser) Fibers: Effects on Chemical and Physical Properties', Drvna industrija, 71(1), str. 69-77. https://doi.org/10.5552/drvind.2020.1905
Vancouver
Crespo Gutiérrez R, Uribe MT, Wilson HP. Hygrothermal Treatment of Tepa (Laureliopsis philippiana Looser) Fibers: Effects on Chemical and Physical Properties. Drvna industrija [Internet]. 2020 [pristupljeno 29.11.2021.];71(1):69-77. https://doi.org/10.5552/drvind.2020.1905
IEEE
R. Crespo Gutiérrez, M.T. Uribe i H.P. Wilson, "Hygrothermal Treatment of Tepa (Laureliopsis philippiana Looser) Fibers: Effects on Chemical and Physical Properties", Drvna industrija, vol.71, br. 1, str. 69-77, 2020. [Online]. https://doi.org/10.5552/drvind.2020.1905

Sažetak
The present study consisted in determining the effects of a hygrothermal treatment on wood fibers from the Laureliopsis philippiana Looser species. The fibers were treated in autoclave at 150 °C for 90 minutes at a pressure of 430 kPa, which was generated during the evaporation process of the water in autoclave. Physical properties, color, and water retention capacity of hygrothermically treated and untreated fibers were analyzed. The chemical properties determined were the extractable amount in sodium hydroxide, toluene ethanol, hot and cold water, the cellulose, holocellulose and lignin contents, the pH value, the percentage of volatile and washable acids, and the buffer capacity. In hygrothermically treated fibers, a change of color was detected as well as a reduction in the water retention capacity and an increase in the percentage of extractable, cellulose, lignin and a decrease of holocellulose. Also an increase in acidity, amount of volatile and washable acids and buffer capacity were determined. Due to the chemical changes observed in the treated fibers, these would present advantages in the manufacture of fiberboards, facilitating the setting of the amino resins.

Ključne riječi
hygrothermal treatment; Laureliopsis philippiana; fibers; physical and chemical properties; acidity; fiberboards

Hrčak ID: 235812

URI
https://hrcak.srce.hr/235812

[hrvatski]

Posjeta: 397 *