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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad de Costa Rica
2014
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| Online Access: | https://www.redalyc.org/articulo.oa?id=44170532003 |
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| _version_ | 1866812432057368576 |
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| author | Tatiana Pardo |
| author_facet | Tatiana Pardo |
| contents | Dimensional stability of wood of Teak and Melina treated with acetic anhydride Tatiana Pardo Johnny Alfaro Ingeniería Acetylation Acetic anhydride Tropical hardwood Dimensional stability The dimensional stability of chemically modified solid samples of the tropical hardwood species Teak (Tectona grandis) and Melina (Gmelina arborea) was studied. Samples of both species were modified using acetic anhydride as reagent, and reaction time was changed to obtain different values of weight percent gain (WPG). Dimensional stability was determined using five cycles of water impregnation and drying of the samples in an oven. Volume changes were measured, and the volumetric swelling coefficient (S%) and anti-swelling-efficiency (ASE%) were calculated. It was found that S% decreases as reaction time increases, whereas the ASE% rises with increasing reaction timefor both species, thus improving the dimensional stability of both hardwoods. 2014 artículo científico 1409-2441 https://www.redalyc.org/articulo.oa?id=44170532003 en http://www.redalyc.org/revista.oa?id=441 Ingeniería. Revista de la Universidad de Costa Rica application/pdf Universidad de Costa Rica Ingeniería. Revista de la Universidad de Costa Rica (Costa Rica) Num.1 Vol.24 |
| format | Artículo científico |
| id | redalyc_44170532003 |
| language | en |
| publishDate | 2014 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Dimensional stability of wood of Teak and Melina treated with acetic anhydride Tatiana Pardo Ingeniería Acetylation Acetic anhydride Tropical hardwood Dimensional stability Dimensional stability of wood of Teak and Melina treated with acetic anhydride Tatiana Pardo Johnny Alfaro Ingeniería Acetylation Acetic anhydride Tropical hardwood Dimensional stability The dimensional stability of chemically modified solid samples of the tropical hardwood species Teak (Tectona grandis) and Melina (Gmelina arborea) was studied. Samples of both species were modified using acetic anhydride as reagent, and reaction time was changed to obtain different values of weight percent gain (WPG). Dimensional stability was determined using five cycles of water impregnation and drying of the samples in an oven. Volume changes were measured, and the volumetric swelling coefficient (S%) and anti-swelling-efficiency (ASE%) were calculated. It was found that S% decreases as reaction time increases, whereas the ASE% rises with increasing reaction timefor both species, thus improving the dimensional stability of both hardwoods. 2014 artículo científico 1409-2441 https://www.redalyc.org/articulo.oa?id=44170532003 en http://www.redalyc.org/revista.oa?id=441 Ingeniería. Revista de la Universidad de Costa Rica application/pdf Universidad de Costa Rica Ingeniería. Revista de la Universidad de Costa Rica (Costa Rica) Num.1 Vol.24 |
| title | Dimensional stability of wood of Teak and Melina treated with acetic anhydride |
| topic | Ingeniería Acetylation Acetic anhydride Tropical hardwood Dimensional stability |
| url | https://www.redalyc.org/articulo.oa?id=44170532003 |