Despite countless use possibilities for bamboo, this material has two major disadvantages. One drawback is the low natural durability of most bamboo species due to presence of starch in their parenchyma cells. The other equally important drawback is the tendency bamboo has to present dimensional variations if subjected to environmental change conditions. In an attempt to minimize these inconveniences, strips (laths) of Dendrocalamus giganteus Munro were taken from different portions of the culm and subjected to several temperatures, namely 140 °C, 180 °C, 220 °C, 260 °C and 300 °C under laboratory conditions, at the ESALQ-USP college of agriculture. The thermal treatment process was conducted in noninert and inert atmospheres (with nitrogen), depending on temperature Specimens were then subjected to physicomechanical characterization tests in order to determine optimum thermal treatment conditions in which to preserve to the extent possible the original bamboo properties. Results revealed that there is an optimum temperature range, between 140 ° and 220 °C, whereby thermally treated bamboo does not signifi cantly lose its mechanical properties while at the same time showing greater dimensional stability in the presence of moisture.Key words: Thermal treatment, Dendrocalamus giganteus. EFEITOS DO TRATAMENTO TÉRMICO NAS CARACTERÍSTICAS FISICO-MECÂNICAS DO BAMBU GIGANTE RESUMO: Embora possam ser atribuídas ao bambu inúmeras possibilidades de utilização, duas grandes desvantagens são apresentadas por esse material. A primeira refere-se à baixa durabilidade natural da maioria das espécies, em razão da presença de amido em suas células parenquimáticas. A outra desvantagem, não menos importante, é a tendência apresentada pelo bambu de apresentar variações dimensionais, quando exposto a mudanças ambientais. Na busca da minimização de tais inconvenientes, taliscas (ripas) de Dendrocalamus giganteus Munro foram coletadas de diversas partes do colmo e foram submetidas, em condições de laboratório, na ESALQ-USP, a diversas temperaturas: 140 °C, 180 °C, 220 °C, 260 °C e 300 °C. Dependendo da temperatura, o processo de termorretifi cação foi realizado em ambientes de atmosfera não inerte e inerte (com nitrogênio
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.