Heat treatment of poplar plywood: modifications in physical, mechanical and durability properties

Marcon, Bertrand; Viguier, Joffrey; Candelier, Kévin; Thevenon, MF; Butaud, JC; Pignolet, L; Gartili, A; Denaud, Louis; Collet, Robert

doi:10.3832/ifor4159-015

Cited by 3 publications

(2 citation statements)

References 29 publications

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“…Furthermore, an assessment of the bending strength and elastic modulus values of the wooden panels was conducted following the guidelines set by the EN 310 standard [ 54 ]. For each mechanical test, three samples were extracted from the central region of a panel specimen [ 55 , 56 , 57 ].…”

Section: Methodsmentioning

confidence: 99%

Assessment and Optimization of the Insecticidal Properties of γ-Al2O3 Nanoparticles Derived from Mentha pulegium By-Products to Xylosandrus crassiusculus (Carob Beetle)

Mohamed Abdoul-Latif,

Ainane,

Eddabbeh

et al. 2024

Molecules

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This study concentrates on assessing the insecticidal attributes of the γ-Al2O3 nanoparticles derived from the remnants of Mentha pulegium, which include essential oil, ethanolic extract, and plant waste. The synthesis of the γ-Al2O3 nanoparticles was executed using a direct sol-gel procedure, affirming the crystal structure according to extensive physicochemical analyses such as UV-Vis, XRD, FTIR, and SEM. Evaluation of the insecticidal activity in vitro was conducted against Xylosandrus crassiusculus, a pest that infests carob wood, utilizing strains from diverse forests in the Khenifra region, situated in the Moroccan Middle Atlas. The lethal doses 50 ranged from 40 mg/g to 68 mg/g, indicating moderate effectiveness compared to the commercial insecticide Permethrin. Optimization of the conditions for the efficiency of the γ-Al2O3 nanoparticles was determined using experimental plans, revealing that time, humidity, and temperature were influential factors in the lethal dose 50 of these nanomaterials. Moreover, this study encompasses the establishment of correlations using Principal Component Analysis (PCA) and Ascending Hierarchical Classification (AHC) among various geographic, biological, and physical data, amalgamating geographic altitude and γ-Al2O3 nanoparticle insecticide parameters, as well as the attributes of the mechanical tests conducted on the carob wood affected by insects. The correlations highlight the close connections between the effectiveness of the insecticide, mountain altitude, and the mechanical parameters that were examined. Ultimately, these nanoparticles demonstrate promising potential as alternative insecticides, thus opening up encouraging prospects for safeguarding against carob wood pests.

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Section: Methodsmentioning

confidence: 99%

Assessment and Optimization of the Insecticidal Properties of γ-Al2O3 Nanoparticles Derived from Mentha pulegium By-Products to Xylosandrus crassiusculus (Carob Beetle)

Mohamed Abdoul-Latif,

Ainane,

Eddabbeh

et al. 2024

Molecules

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“…Heat treatment is an alternative and an effective wood modification method for improving the dimensional stability and durability of wood with no use of chemical additives (Nazerian and Dahmardeh Ghalehno 2011;Poncsak et al 2011;Hill et al 2021). Heat treatment changes the chemical composition, structure, and properties of wood (Esteves et al 2013;Xing et al 2020;Marcon et al 2023). Sernek et al (2008) studied the effect of heat treatment on bonding properties of Norway spruce (Picea abies Karst), Douglas fir (Pseudotsuga menziesii Franco), poplar (Populus species), birch (Betula pendula), and alder (Alnus glutinosa Gaertn).…”

Section: Introductionmentioning

confidence: 99%

Physical and mechanical properties of laminated wood made from heat-treated Scotch pine reinforced with carbon fiber

Perçin

Uzun

2023

BioRes

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Laminated veneer lumber (LVL) and reinforced laminated veneer lumber (RLVL) with carbon fiber were produced from heat-treated Scotch pine (Pinus sylvestris L.) wood using phenol formaldehyde (PF), polyvinyl acetate (PVAc), and polyurethane (PU) resins. Wood veneers were subjected to heat treatments at 150 °C, 170 °C, or 190 °C for 2 h before lamination. The effects of the reinforcement, heat treatment temperatures, and resins on the properties of the LVL and RLVL were analyzed. Density, equilibrium moisture content (EMC), modulus of rupture (MOR), and modulus of elasticity (MOE) were evaluated. The results showed that MOR and MOE values of solid wood and LVL specimens decreased with increasing treatment temperature. However, reinforcement with carbon fiber increased both MOR and MOE. In addition, the density values of the all RLVL specimens improved, and the EMC altered significantly for all test specimens. Compared to solid samples, the highest MOR values increased by approximately 21% in PF-RLVL samples. Similarly, the highest MOE values increased by 31% in PF-RLVL samples. In conclusion, carbon fiber, one of the most used fabric types in composites, could be utilized in the manufacture of reinforced LVL with heat-treated veneers.

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Assessment and Optimization of the Insecticidal Properties of γ-Al2O3 Nanoparticles Derived from Mentha pulegium By-Products against Xylosandrus crassiusculus (Carob Beetle)

Mohamed Abdoul-Latif,

Ainane,

Eddabbeh

et al. 2024

Preprint

View full text Add to dashboard Cite

This study concentrates on assessing the insecticidal attributes of γ-Al2O3 nanoparticles derived from remnants of Mentha pulegium, which include essential oil, ethanolic extract, and plant waste. The synthesis of γ-Al2O3 nanoparticles was executed via a direct sol-gel procedure, affirming the crystal structure through extensive physicochemical analyses such as UV-VIS, XRD, FTIR, and SEM. The evaluation of insecticidal activity in vitro was conducted against Xylosandrus crassiusculus, a pest that infests carob wood, utilizing strains from diverse forests in the Khenifra region, situated in the Moroccan Middle Atlas. The lethal doses 50 ranged from 40 mg/g to 68 mg/g, indicating moderate effectiveness compared to the commercial insecticide Permethrin. The optimization of the conditions for the efficiency of γ-Al2O3 nanoparticles was determined by experimental plans, revealing that time, humidity, and temperature were influential factors in the lethal dose 50 of these nanomaterials. Moreover, this study encompasses the establishment of correlations through Principal Component Analysis (PCA) and Ascending Hierarchical Classification (AHC) among various geographic, biological, and physical data, amalgamating geographic altitude, γ-Al2O3 nanoparticle insecticide parameters, as well as the attributes of mechanical tests conducted on carob wood affected by insects. The correlation highlights a close connection between the effectiveness of the insecticide, mountain altitude, and the mechanical parameters that were examined. Ultimately, these nanoparticles demonstrate promising potential as alternative insecticides, thus opening encouraging prospects for safeguarding against carob wood pests.

show abstract

Heat treatment of poplar plywood: modifications in physical, mechanical and durability properties

Cited by 3 publications

References 29 publications

Assessment and Optimization of the Insecticidal Properties of γ-Al2O3 Nanoparticles Derived from Mentha pulegium By-Products to Xylosandrus crassiusculus (Carob Beetle)

Assessment and Optimization of the Insecticidal Properties of γ-Al2O3 Nanoparticles Derived from Mentha pulegium By-Products to Xylosandrus crassiusculus (Carob Beetle)

Physical and mechanical properties of laminated wood made from heat-treated Scotch pine reinforced with carbon fiber

Assessment and Optimization of the Insecticidal Properties of γ-Al2O3 Nanoparticles Derived from Mentha pulegium By-Products against Xylosandrus crassiusculus (Carob Beetle)

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