Effects of Heat Treatment on Interfacial Properties of Pinus Massoniana Wood

Wu, Zhigang; Deng, Xue; Li, Lifen; Xi, Xuedong; Tian, Meifen; Zhang, Bengang

doi:10.3390/coatings11050543

Cited by 17 publications

(12 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Lower temperatures (160 and 180 • C) caused less color changes in pH 6, 8 and 10 compared to acidic and water media, while high temperatures (200 • C) caused the most color changes. The hydrothermal treatment changed the color of the sample significantly as the treatment temperature increased [31][32][33]. This finding was consistent with the research findings in [34].…”

Section: Acidity Variation In Rubberwoodsupporting

confidence: 90%

Physical Properties of Hydrothermally Treated Rubberwood [Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg.] in Different Buffered Media

Ali

Abdullah

Ashaari

et al. 2022

Forests

View full text Add to dashboard Cite

The dimensional instability of rubberwood [Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg.] is one of the major drawbacks that limits its utilization. Therefore, treatment is needed to improve these properties. Hydrothermal treatment in different buffered media is one of the techniques that improve its dimensional stability. The physical properties of hydrothermally treated rubberwood in different buffered media (pH 4, 6, 8, 10) and tap water (pH 7.43) with different temperatures (160 °C, 180 °C and 200 °C) were studied. In this study, physical properties such as equilibrium moisture content (EMC), density (ρ), mass loss (ML), water absorption (WA), volumetric swelling coefficient (VSC), thickness swelling (TS) and anti-swelling efficiency (ASE) were investigated for both treated and untreated specimens. Both the buffered media and temperature significantly affected the physical properties. The results indicated that the EMC (%), ρ (kg/m3), ML (%), VSC (%), TS (%) of treated rubberwood samples reduced as the treatment temperature increased. With the exception of WA (%), as WA increased when the treatment temperature increased from 160 °C to 180 °C but started to decrease when the temperature was further increased to 200 °C. The research study also exhibited that hydrothermal treatment using buffered media at different temperatures enhanced the dimensional stability of the treated samples. Alkaline media gave the best results on the physical properties compared to other treatment medias.

show abstract

Section: Acidity Variation In Rubberwoodsupporting

confidence: 90%

Physical Properties of Hydrothermally Treated Rubberwood [Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg.] in Different Buffered Media

Ali

Abdullah

Ashaari

et al. 2022

Forests

View full text Add to dashboard Cite

show abstract

“…4720 cellulose as a result of the heat treatment. Since crystalline cellulose exhibits anisotropic structure, its solid and rigid structure provides a slight increase in the longitudinal compressive strength (Bhuiyan and Hirai 2005;Korkut and Kocaefe 2009;Beroual et al 2020;Wang et al 2020;Wu et al 2021;Cao et al 2022). Boonstra et al (2007b), stated that the loss of some mechanical strength with heat treatment is mainly due to the degradation of hemicellulose.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Effect of heat treatment parameters on the physical, mechanical, and crystallinity index properties of Scots pine and beech wood

Birinci

Karamanoğlu

Kesik

et al. 2022

BioRes

View full text Add to dashboard Cite

Effects of heat treatment parameters on the physical properties, mechanical properties, and crystallinity index of Scots pine and beech wood were investigated. Scots pine (Pinus sylvestris L.) and beech (Fagus orientalis Lipsky) sapwood samples were prepared in 2 cm × 2 cm × 36 cm dimensions by considering the physical and mechanical tests. The samples were heat-treated for 2 h and 4 h at 150 °C, 180 °C, and 210 °C in an atmospheric environment. The shrinking and swelling percentages of all samples were calculated. The compressive strength, bending strength, modulus of elasticity (MOE), and hardness tests were carried out. X-ray diffraction (XRD) was performed to calculate the crystallinity index values. As a result of the study, it was determined that heat treatment generally had a positive effect on the physical properties of Scots pine and beech samples. It was observed that the bending strength of the wood samples decreased up to 180 °C as the temperature increased and then increased. It was determined that the MOE of the Scots pine and beech wood decreased with the heat treatment. As the heat treatment temperature and time were increased, the crystallinity index values initially increased partially and then decreased.

show abstract

“…There is an absorption band in the region of 3300-3400 cm −1 in the obtained spectra. This is a characteristic of the stretching vibration of O-H groups of water in treated and untreated wood [50] and for ethylene glycol contamination of used motor oil during operation in the engine [51,52]. As a result of impregnation of birch wood with used engine oil, the spectra show clear absorption bands in the 2925 cm −1 and 2850 cm −1 region.…”

Section: Investigation Of Possibility Of Intermolecular Interaction Formation (Methods Of Ir-fourier Spectroscopy) During Wood Impregnatimentioning

confidence: 96%

Impregnation of Wood with Waste Engine Oil to Increase Water- and Bio-Resistance

Belchinskaya

Жужукин

Ishchenko

et al. 2021

Forests

View full text Add to dashboard Cite

Impregnation is a common method of protecting wood from external influences. This study proposes the use of spent engine oil as an impregnating composition for modifying birch wood to make it resistant to biological degradation and water. The indicators of water resistance and dimensional stability of wood such as wetting contact angle, thermogravimetric analysis, Fourier transform infrared spectroscopy (FTIR), and biodegradation tests have been determined. It has been found that treatment with spent engine oil significantly increases the dimensional stability (56.8% and 45.7% in tangential and radial directions) and water-resistant indicators of wood. Thermogravimetric analysis has showed that the curves for the impregnated specimens were different from the control group and had two sharp peaks at 302 and 357 °C. However, FTIR indicated that no clear chemical reactions occur between spent engine oil and wood. A study on wood resistance to biological degradation has showed a significant increase in resistance against brown rot (Poria placenta fungi) in the treated specimens, in contrast to the control group. Thus, impregnation of wood with spent engine oil makes it possible to increase wood resistance to water and biological degradation.

show abstract

Effects of Heat Treatment on Interfacial Properties of Pinus Massoniana Wood

Cited by 17 publications

References 30 publications

Physical Properties of Hydrothermally Treated Rubberwood [Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg.] in Different Buffered Media

Physical Properties of Hydrothermally Treated Rubberwood [Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg.] in Different Buffered Media

Effect of heat treatment parameters on the physical, mechanical, and crystallinity index properties of Scots pine and beech wood

Impregnation of Wood with Waste Engine Oil to Increase Water- and Bio-Resistance

Contact Info

Product

Resources

About