Effect of the temperature of the heat treatment of pine wood on subsequent <scp><i>in situ</i></scp> polymerization with poly(methyl methacrylate)

Acosta, Andrey Pereira; Díaz, René Herrera; Amico, Sandro Campos; Beltrame, Rafael; Barbosa, Kelvin Techera; Delucis, Rafael A.; Gatto, Darci Alberto

doi:10.1002/bbb.2451

Cited by 3 publications

(2 citation statements)

References 49 publications

(106 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All these bands appear with greater intensity for the weathered woods, which may indicate changes in all the macromolecular compounds from the wood due to the weathering. Similar behavior was reported by Acosta et al (2022), who investigated a heat-treated pine (Pinus elliottii Engelm.) wood.…”

Section: Effects Of the Weathering On The Thermally Treated Woodssupporting

confidence: 84%

Effects of thermal treatment and weathering in the resistance against termites of a fast-growing pine wood

Ripoll de Medeiros,

Pereira Acosta,

Techera Barbosa

et al. 2023

Maderas-Cienc Tecnol

View full text Add to dashboard Cite

Considering the limited existing literature on the combined effects of thermal treatment and weathering on the resistance of fast-growing pine wood to subterranean termites, this work deals with the resistance against subterranean termites of a thermally treated and weathered fast-growing pine wood. The pine wood was thermally treated at variable temperatures (c.a. 180 ºC, 200 ºC, and 220°C) for 2 h and then exposed to artificial weathering for three months. Chemical, hygroscopic, thermal, mechanical, colorimetric, biological, and morphological characteristics were evaluated. Compared to the untreated wood, as expected, the thermal treatments yielded wood parts with improved thermal, hygroscopic and colorimetric features. The thermal treatment also helped for retaining the thermal stability, volumetric hydrophobicity, color, and roughness of the pine wood exposed to the weathering. Previous changes ascribed to the weathering process did not affect the damages attributed to the termites attack, although that wood treated at 180 ºC presented an increased resistance against the termites deterioration.

show abstract

Section: Effects Of the Weathering On The Thermally Treated Woodssupporting

confidence: 84%

Effects of thermal treatment and weathering in the resistance against termites of a fast-growing pine wood

Ripoll de Medeiros,

Pereira Acosta,

Techera Barbosa

et al. 2023

Maderas-Cienc Tecnol

View full text Add to dashboard Cite

show abstract

“…Currently, various methods are employed to protect wood from external factors, including chemical modifications, thermal treatments, and the application of additives or chemicals as coatings or penetrating finishes with protective formulations [ 9 , 10 , 11 , 12 ]. These approaches often involve the covalent bonding of chemicals, altering wood moisture sorption properties or filling the cell wall with chemical compounds to block hygroscopic groups and reduce sorption sites.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Improvement of Surface Wettability and UV Resistance of Wood with Lignin-Based Treatments

et al. 2023

View full text Add to dashboard Cite

Recent advancements in wood modification aim to enhance the inherent qualities of this versatile biological material, which includes renewability, ease of processing, and thermal insulation. This study focuses on evaluating the effectiveness of lignin as a protective agent for less durable wood species, namely, Pinus nigra and Fagus sylvatica L. The impregnation of wood with three various forms of lignin, such as kraft lignin, acetylated kraft lignin, and lignin nanoparticles, was carried out using the vacuum technique at room conditions. The results showed that the treatments significantly improve the hydrophobicity of wood surfaces, particularly in pine wood, and provide protection against UV ageing. Additionally, the treatments contributed to the stabilisation of moisture content at different humidity levels. Although slight colour variations were observed, their impact on the visual appearance was minimal, and the thermal analysis confirmed enhanced thermal properties. Additionally, plasma treatment further enhanced hydrophobicity after treatments, offering potential benefits in terms of moisture resistance and durability. The findings of this study highlight the promising effects of lignin-based treatments on wood properties, providing sustainable solutions for wood protection in various sectors. However, further optimisation is needed to fully explore the potential of lignin and lignin nanoparticles.

show abstract

Enhancing green polyethylene composites with filler heat treatment: Pecan nutshells and Pinus sawdust impact

Rodrigues,

Fernandes,

Paganotto

et al. 2024

Journal of Reinforced Plastics and Composites

View full text Add to dashboard Cite

The aim of the present study was to produce sustainable composites using green low-density polyethylene (LDPE) reinforced with heat-treated lignocellulosic residues. The transformation processes were employed to enhance the chemical compatibility of lignocellulosic wastes with the polymer matrices of the composite materials. Sawdust from pine wood (PW) and milled pecan nutshells (NS) were subjected to a thermal treatment at 180°C for 2 h. These heat-treated residues were then homogenized with the polymer matrix and molded through hot compression. The resulting wood polymer composites (WPCs) were subjected to various characterization tests, including density, mechanical properties, infrared spectroscopy, thermal stability, hygroscopic behavior, and morphology. Comparing the composites, the inclusion of heat-treated fillers led to reductions in water absorption and thickness swelling, especially for the NS. Furthermore, the composites didn’t exhibit increased flexural strength and/or tensile strength after the bio-components treatment. The insertion of thermally treated lignocelluloses also resulted in slight decreases in equilibrium moisture content and apparent contact angles.

show abstract

Effect of the temperature of the heat treatment of pine wood on subsequent in situ polymerization with poly(methyl methacrylate)

Cited by 3 publications

References 49 publications

Effects of thermal treatment and weathering in the resistance against termites of a fast-growing pine wood

Effects of thermal treatment and weathering in the resistance against termites of a fast-growing pine wood

Simultaneous Improvement of Surface Wettability and UV Resistance of Wood with Lignin-Based Treatments

Enhancing green polyethylene composites with filler heat treatment: Pecan nutshells and Pinus sawdust impact

Contact Info

Product

Resources

About