Nanoparticles-Based Wood Preservatives: The Next Generation of Wood Protection?

Borges, Cilene Cristina; Tonoli, Gustavo Henrique Denzin; Cruz, Thiago Moreira; Duarte, Paulo Júnio; Junqueira, Thomaz Antunes

doi:10.1590/01047760201824042531

Cited by 43 publications

(26 citation statements)

References 53 publications

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“…Screening studies have shown that a 1 wt.% dispersion of 30 nm Cu, Zn, and B nanoparticles significantly inhibits the growth of brown rot fungi, while completely eradicating other non-fungal wood pests (termites, molds). Metal oxide nanoparticles (e.g., ZnO) are less effective as fungicides [ 62 ].…”

Section: Antifungal Wood Preservationmentioning

confidence: 99%

Ionic Liquids as Antifungal Agents for Wood Preservation

Croitoru

Roată

2020

Molecules

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Ionic liquids represent a class of highly versatile organic compounds used extensively in the last decade for lignocellulose biomass fractionation and dissolution, as well as property modifiers for wood materials. This review is dedicated to the use of ionic liquids as antifungal agents for wood preservation. Wood preservation against fungal attack represents a relatively new domain of application for ionic liquids, emerging in the late 1990s. Comparing to other application domains of ionic liquids, this particular one has been relatively little researched. Ionic liquids may be promising as wood preservatives due to their ability to swell wood, which translates into better penetration ability and fixation into the bulk of the wood material than other conventional antifungal agents, avoiding leaching over time. The antifungal character of ionic liquids depends on the nature of their alkyl-substituted cation, on the size and position of their substituents, and of their anion. It pertains to a large variety of wood-colonizing fungi, both Basidiomycetes and Fungiimperfecti.

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Section: Antifungal Wood Preservationmentioning

confidence: 99%

Ionic Liquids as Antifungal Agents for Wood Preservation

Croitoru

Roată

2020

Molecules

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“…However, there is a growing interest in the development of purely inorganic or inorganic-rich alternative solutions stimulated by new requirements and regulations such as the reduction of volatile organic compounds emissions or the demand for ultraviolet-resistant and fire-retardant products. A large number of research works have been published in recent years on surface coatings of wood by depositing thin layers of various inorganic nanoparticles (e.g., TiO 2 , SiO 2 , Al 2 O 3 , ZnO, CuO) or even metallic particles (e.g., Ag, Zn, Cu, Al) using techniques such as sol-gel impregnation, or physical and chemical vapor deposition [1][2][3][4]. Silicate-based coating systems are also potential inorganic alternatives that have the added advantage of being formulated for application by any end user with a minimum of experience and for wood renovation.…”

Section: Introductionmentioning

confidence: 99%

Study of the Adhesion of Silicate-Based Coating Formulations on a Wood Substrate

et al. 2021

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Silicate coatings are environmentally friendly inorganic-based products that have long been used for mineral substrates and protection of steel against corrosion. The development and acceptance of these coatings in the wood sector require some adjustments in formulations or special preparation of the surface to be coated to obtain durable finishes. In this work, the adhesion of various silicate-based formulations to a beech wood substrate (Fagus sylvatica L.), was assessed with the main objective to study relevant parameters and potential improvements. Adhesion strength was determined by pull-off and cross-cut tests. Other coating properties such as scratch, impact, and water resistance were also determined. Surface roughness and interface were analyzed using confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM), and coating curing was studied by attenuated total reflection-infrared spectroscopy (ATR FTIR). The results showed that adhesion was highly dependent on formulation, penetration of the coatings into wood, and mechanical anchoring. Increasing the content of solid particles in the coating formulations or adding a polyol (glycerol, xylose), which probably acted as a coalescent, considerably decreased the adhesion strength, probably by blocking penetration into the wood by forming aggregates. Adhesion was improved by pre-mineralization of the surface, and substitution of a part of the potassium silicate binder with potassium methyl siliconate reduced the formation of cracks caused by dimensional instability of the wood.

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“…The preservation of the material depends on the addition of toxic substances or repellents, known as wood preservatives, with a focus on increasing the resistance to deterioration and durability (Lepage et al, 2017). In Brazil, the most used treatments are those based on chromed copper arsenate (CCA) and chromed copper borate (CCB) (Vidal et al, 2015;Borges et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Physical and mechanical behavior of glulam beams produced with rubberwood treated with preservatives

et al. 2020

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This work aimed to evaluate the physical and mechanical behavior of glued laminated timber (GLT) - glulam pieces of Hevea brasiliensis treated with chromed copper arsenate (CCA), chromed copper borate (CCB) and pyrethroid in the production of GLT. The pieces were produced using three wooden laminae with dimensions of 60 x 20 x 1200 mm, (width x thickness x length), joined with epoxy adhesive under 1.0 MPa pressure for 24h at room temperature. The rubberwood had an apparent density of 0.624 g cm-3, a value close to that of Eucalyptus grandis wood, a species traditionally used in the manufacture of GLT. Regarding the GLT parts, it was observed that the preservative treatment with CCA and CCB influenced negatively the values of the mechanical properties. For resistance modulus (MOR), a reduction of 75.44 MPa to 62.36 and 58.57 MPa was found for the parts untreated and treated with CCA and CCB, respectively. There was no statistical difference for surface treatment with pyrethroid. The photomicrographs of the glue line showed that the reduction in these values was mainly due to the penetration of preservative solutions into the wood structure (cell lumens and vessels or pores), impairing the anchoring of the adhesive.

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Nanoparticles-Based Wood Preservatives: The Next Generation of Wood Protection?

Abstract: Review on biocides nanoparticles. Nanoparticles-based wood preservatives. Nanoparticles biocides applied on wood protection. Protection against biodeterioration through nanotechnology.

Cited by 43 publications

References 53 publications

Ionic Liquids as Antifungal Agents for Wood Preservation

Ionic Liquids as Antifungal Agents for Wood Preservation

Study of the Adhesion of Silicate-Based Coating Formulations on a Wood Substrate

Physical and mechanical behavior of glulam beams produced with rubberwood treated with preservatives

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