Related Papers
Madera y Bosques
Preservación de la madera usando productos naturales
2015 •
Dra. Martha Rocío Moreno Jiménez
Wood preservation using natural productsIt is a current concern in the wood preservation field to avoid the use of toxic chemicals and develop new technologies based on low environmental impact agents and sustainable principles. Under this expectation, an intended state-of-the-art is introduced on the application of natural products such as traditional tar and wood oils as well as tannins and plant extracts. A particular revision to heartwood chemical components is offered. The combined methods of using natural and chemical components are reviewed, considering as outstanding the mixtures of natural organic constituents with cooper and boron salts that seem to be under encouraging experimentation. Fungicides and anti-termite applications are commented as well the leaching problem of inorganic salts. Chemical modification of wood structure through the formation of adducts and the treatment with nanomaterials are promising tools that will change the actual view and performance of wood ...
Madera Y Bosques
Wood preservation using natural products
2015 •
Martha Rosales-Castro
Wood preservation using natural products Preservación de la madera usando productos naturales
Ruben Gonzalez
AbstrAct It is a current concern in the wood preservation field to avoid the use of toxic chemicals and develop new technologies based on low environmental impact agents and sustainable principles. Under this expectation, an intended state-of-the-art is introduced on the application of natural products such as traditional tar and wood oils as well as tannins and plant extracts. A particular revision to heartwood chemical components is offered. The combined methods of using natural and chemical components are reviewed, considering as outstanding the mixtures of natural organic constituents with cooper and boron salts that seem to be under encouraging experimentation. Fungicides and anti-termite applications are commented as well the leaching problem of inorganic salts. Chemical modification of wood structure through the formation of adducts and the treatment with nanomaterials are promising tools that will change the actual view and performance of wood preservation techniques. resumen Una de las prioridades actuales en el campo de la preservación de madera es evitar el uso de materiales tóxicos, desarrollando nuevas tecnologías fundamentadas en principios sustentables y empleando agentes de bajo impacto ambiental. Con esta expectativa se plantea una revisión del estado del arte sobre la aplicación de productos naturales, tales como taninos, alquitrán, aceites y extractos vegetales. Se presenta en particular una revisión sobre los componentes químicos contenidos en el duramen de maderas naturalmente resistentes. Se analizan los métodos combinados de ingredientes naturales y químicos, resaltando las mezclas de componentes naturales orgánicos con sales de cobre y boro que parecen representar una opción experimental confiable. Se comentan también las aplicaciones fungicidas y anti termitas, así como los problemas de lixiviación de sales inorgánicas. Opciones como la modificación química de la madera vía la formación de aductos y por tratamiento con nanomateriales son procesos promisorios que cambiaran eventualmente la manera de ver y aplicar la tecnología actual de preservación de maderas.
Performance of zinc oxide and titanium dioxide on wood protection
2019 •
Cilene Borges
O uso da madeira apresenta inumeras vantagens em relacao a polimeros sinteticos, sendo o material preferido para diversas aplicacoes decorativas e de engenharia. Algumas madeiras, no entanto, apresentam baixa resistencia natural a deterioracao biologica e requerem tratamento. Atraves dos tempos, diversos tratamentos preservativos foram desenvolvidos, mas a busca por novas tecnologias de alta eficiencia, baixa toxidade ao ambiente e a saude humana continua sendo um desafio para pesquisadores. O uso de nanoparticulas na protecao da madeira ainda e incipiente, mas a nanotecnologia tem avancado consideravelmente nos ultimos anos, abrindo portas para novos experimentos e aplicacoes do conhecimento dentro da area de preservacao de madeiras. O objetivo principal deste trabalho foi avaliar o desempenho de tratamentos a base de nanoparticulas de oxido de zinco (ZnO) e dioxido de titânio (TiO2) na protecao da madeira. Amostras de madeira provenientes de arvores de ~7 anos de idade foram trata...
Improvement of the durability of heat-treated wood against termites
Maderas. Ciencia y Tecnologia
Thermal modification is an attractive alternative to improve the decay durability and dimensional stability of wood. However, thermally modified wood is generally not resistant to termite attacks, limiting the field of application of such materials. One way to overcome this drawback is to combine thermal modification treatment with an additional treatment. One such treatment is the impregnation of a boron derivative associated with appropriate vinylic monomers, which takes advantage of the thermal treatment to polymerise these monomers for boron fixation. Using this strategy, we recently showed that an impregnation of borax (2 or 4% boric acid equivalent) dissolved in a 10% aqueous solution of polyglycerolmethacrylate followed by thermal treatment under nitrogen at 220°C protects wood from both termite and decay degradations, even after leaching. Additionally, wood samples treated with a 10% polyglycerolmethacrylate aqueous solution and subjected to thermal treatment at 220°C presented improved resistance to termites while avoiding boron utilization. Based on these results, we investigate the effect of impregnation with two types of vinylic monomers, which are already used in the presence of boron, followed by thermal treatments at different temperatures. We evaluate termite and decay durability of wood to evaluate if thermal modification associated with light chemical modification could be a solution for utilization of thermally modified materials in termite-infested areas.
BioResources
Eco-friendly preservation of bamboo species: Traditional to modern techniques
Satya Narayan Naik
The continuous depletion of forests calls for the astute usage of existing resources. Fungi and termites cause serious damage to biomass under storage and service conditions. Various protective treatments with high amounts of toxic chemicals are used by the wood and bamboo industry. Efforts are being made the world over to develop environmentally friendly preservatives for wood and bamboo species. Recent research highlights the potential and effectiveness of traditional practices and procedures, mainly water leaching technique and smoke treatment. Under laboratory conditions, the service life of treated blocks were found to be at a par with commercial chemical preservative treated blocks. Various plant extracts and oil-based formulations, such as organic acids, essential oils, and eco-friendly chemical-based preservatives, are in the stage of development. The bio-efficacy of such preservatives is measured in terms of the improvement in resistance to fungi and termites. However, much...
PEER-REVIEWED REVIEW ARTICLE Eco-Friendly Preservation of Bamboo Species: Traditional to Modern Techniques
perminder.dua dua
The continuous depletion of forests calls for the astute usage of existing resources. Fungi and termites cause serious damage to biomass under storage and service conditions. Various protective treatments with high amounts of toxic chemicals are used by the wood and bamboo industry. Efforts are being made the world over to develop environmentally friendly preservatives for wood and bamboo species. Recent research highlights the potential and effectiveness of traditional practices and procedures, mainly water leaching technique and smoke treatment. Under laboratory conditions, the service life of treated blocks were found to be at a par with commercial chemical preservative treated blocks. Various plant extracts and oil-based formulations, such as organic acids, essential oils, and eco-friendly chemical-based preservatives, are in the stage of development. The bio-efficacy of such preservatives is measured in terms of the improvement in resistance to fungi and termites. However, much work still needs to be done to completely determine the efficacy of many of these newly developed preservatives and techniques. The present paper discusses an overview of the developments in the field of environment-friendly biomass preservatives.
Annals of Forest Science
Effect of an oil heat treatment on the teachability and biological resistance of boric acid impregnated wood
2007 •
A. Pizzi
Wood Material Science & Engineering
Wood durability in terrestrial and aquatic environments – A review of biotic and abiotic influence factors
2020 •
Holger Militz
Evaluation of Different Plant Derived Oils
2019 •
Rushda Fatima
1 DOI:10.4067/S0718-221X2020005XXXXXX 1 EVALUATION OF DIFFERENT PLANT DERIVED OILS AS WOOD 2 PRESERVATIVES AGAINST SUBTERRANEAN TERMITE ODONTOTERMES 3 OBESUS 4 Sohail Ahmed1, Rushda Fatima2, Babar Hassan1* 5 1 Termite Research Laboratory, Department of Entomology, University of Agriculture, 6 Faisalabad, Punjab, Pakistan. Saha786_pk@yahoo.com, sialuaf@gmail.com 7 2 Department of Entomology, University College of Agriculture, University of Sargodha. 8 Sargodha. Punjab, Pakistan. r_482_1980@yahoo.com 9 *Corresponding author: sialuaf@gmail.com 10 Received: November 01, 2018 11 Accepted: November 23, 2019 12 Posted online: November 25, 2019 13 14 ABSTRACT 15
