Performance properties of particleboard panels modified with nanocellulose/boric acid

Kang

et al. 2023

BioRes

The mechanical properties and termite and decay resistance performance of wood-based panel used in wooden houses were evaluated. The physical and mechanical properties, along with the resistance levels, of commonly used wood-based panels, including oriented strand board, structural particleboard, and particleboard for use in interior, were compared. The structural particleboard complied with the physical, mechanical, and formaldehyde emission standards of the International Organization for Standardization and Japanese Industrial Standard, surpassing the requirements for oriented strand board. The structural particleboard exhibited excellent water resistance and a consistent performance. Decay tests classified the particleboard and structural particleboard as “Resistant,” with mass losses of 7.82 to 12.72% (white rot) and 14.69 to 16.55% (brown rot). Pine (Pinus densiflora) and oriented strand board exhibited no decay resistance, with mass losses exceeding 45%. The particleboard and structural particleboard demonstrated superior termite resistance, resulting in 100% termite mortality in three days without chemical treatment. The structural particleboard exhibited excellent water, decay, and termite resistance, which can be an advantage in wooden-house construction in terms of maintenance.

Section: Introductionmentioning

confidence: 99%

Mechanical properties of structural particleboard and termite and decay resistance

Kang

et al. 2023

BioRes

“…Boron compounds are widely used as flame retardants in wood and bamboo products, which considerably reduces the severity of thermal degradation (Nagieb et al 2011;Wu and Xu 2014;Cavdar et al 2015). In addition to imparting flame retardancy, boron compounds also have several advantages in wood preservation, and are especially effective against fungi and termites (Nagieb et al 2011;Yildirim and Candan 2021). As one of the most widely used boron compounds, boric acid is a good preservative and flame retardant for biomaterials (Pedieu et al 2012;Efhamisisi et al 2016).…”

Section: Introductionmentioning

confidence: 99%

“…As one of the most widely used boron compounds, boric acid is a good preservative and flame retardant for biomaterials (Pedieu et al 2012;Efhamisisi et al 2016). In addition, the thermal stability of nanocellulose and lignocellulose, which are used in bio-composites, could also be improved by boric acid modification (Zhang et al 2020;Yildirim and Candan 2021).…”

Section: Introductionmentioning

confidence: 99%

Improvements in the physical properties and decay resistance of bamboo materials via modification with boric acid and borax

Liu

2022

BioRes

As a renewable biomaterial, bamboo has been widely used in construction and indoor decoration. While the application of bamboo is limited by its low decay resistance and flame retardancy, the combination of modification with boric acid and borax has been found to be effective for improving bamboo flame retardant. In this study, the decay resistance, mechanical properties, and physical properties of bamboo, both before and after treated being with boric acid and borax (in a 1 to 2 ratio), were analyzed to better utilize the modification solution for bamboo. The results showed that in comparison to the untreated bamboo, the treated bamboo had a strong decay resistance, i.e., greater than 80% resistance effectiveness improvement. In addition, the decay resistance and compression strength of the samples showed a considerable increase, i.e., 21%, after the modification. However, the physical properties e.g., the weight gain, equilibrium moisture content, and dimensional stability and bending properties of the bamboo were less affected by the modification method, which could be improved via the combination with another chemical modification agent.

International Wood Products Journal

“…The use of UF and PF resins as wood adhesives has several advantages which have been mentioned in previous studies (Younesi-Kordkheili and Pizzi 2020a; Younesi-Kordkheili and Pizzi 2020b; Younesi-Kordkheili and Pizzi 2021). However, the panels produced with these types of adhesives cause carcinogenic formaldehyde emissions, which are known to have negative effects on human health in their service life and it is the greatest drawback of these adhesives (Conner 1996; Dunky 1997; Gonultas 2018; Yildirim et al 2021; Yildirim and Candan 2021). Yildirim et al (2021) and Yildirim and Candan (2021) indicated that the chemical performance properties of UF resin could be enhanced by using proper nanocellulose, boric acid and borax loading levels.…”

Section: Introductionmentioning

confidence: 99%

“…However, the panels produced with these types of adhesives cause carcinogenic formaldehyde emissions, which are known to have negative effects on human health in their service life and it is the greatest drawback of these adhesives (Conner 1996; Dunky 1997; Gonultas 2018; Yildirim et al 2021; Yildirim and Candan 2021). Yildirim et al (2021) and Yildirim and Candan (2021) indicated that the chemical performance properties of UF resin could be enhanced by using proper nanocellulose, boric acid and borax loading levels. In recent years, many research works have been carried out to replace synthetic adhesives with natural macromolecules obtained from natural resources such as lignin and corn flour.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of a modified corn flour-lignin-glyoxal as a Green wood adhesive

Younesi-Kordkheili

Pizzi

2022

A corn flourlignin-glyoxal (CLG) green wood adhesive was prepared by esterification and polyisocyanate prepolymer crosslinking of corn flour. At first corn flour was esterified by maleic anhydride and 10% polyisocyanate was added to it. The modified corn flour was then added at various contents (2, 4 and 6% on resin solids) to phenolated lignin and glyoxal solution to obtain the CLG resin. According to the FTIR spectra, the ester groups (-C=O) at 1730 cm-1 increased due to the esterification of corn flour by maleic anhydride. The addition of the modified corn flour significantly increased the viscosity and solid content and accelerated the gelation time of CLG resins. DSC analysis indicated that increasing the modified corn flour continuously decreases the gel onset and curing temperatures of the resin. Greater mechanical strength and higher dimensional stability of panels bonded with CLG resins can be obtained by modification of corn flour.