Thermochemical and Mechanical Properties of Pine Wood Treated by In Situ Polymerization of Methyl Methacrylate (MMA)

Acosta, Andrey Pereira; Labidi, Jalel; Schulz, Henrique Römer; Gallio, Ezequiel; Barbosa, Kelvin Techera; Beltrame, Rafael; Delucis, Rafael de Ávila; Gatto, Darci Alberto

doi:10.3390/f11070768

Cited by 12 publications

(6 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The adhesives were applied to pine (Pinus elliottii) woods that came from an approximately 15-year-old planted forest located at Piratini, Brazil. Based on background studies from the research group using wood of the same species and origin, the mechanical properties of this material are as follows: 11-15 MPa for compressive modulus, 39-43 MPa for compressive strength, 7-11 GPa for bending modulus, 62-76 MPa for bending strength, and 31-44 MPa for surface hardness [32,33]. Prior to that, the samples were prepared with sandpaper number 60, according to ASTM D905 [34].…”

Section: Bond Properties At the Wood-to-wood Interface For Adhesive E...mentioning

confidence: 99%

Polyurethane Adhesives for Wood Based on a Simple Mixture of Castor Oil and Crude Glycerin

Peres,

Ribeiro,

Aramburu

et al. 2023

Materials

Self Cite

View full text Add to dashboard Cite

Developing a new type of polyurethane is essential because conventional options often exhibit shortcomings in terms of environmental sustainability, cost-effectiveness, and performance in specialized applications. A novel polyurethane adhesive derived from a simple mixture of castor oil (CO) and crude glycerin (CG) holds promise as it reduces reliance on fossil fuels and harnesses renewable resources, making it environmentally friendly. Simple CO/CG mixtures, adjusted at three different weight fractions, were used as bio-based polyester polyols to produce polyurethane adhesive for wood bonding. The resulting products are yellowish liquids with moderate-to-high viscosity, measuring 19,800–21,000 cP at 25 °C. The chemical structure of the polyester polyols was characterized using infrared spectroscopy (FTIR), thermogravimetry (TG), and differential scanning calorimetry (DSC). These polyols reacted with polymeric 4,4-methylene diphenyl diisocyanate (p-MDI) at a consistent isocyanate index of 1.3, resulting in the formation of polyurethane adhesives. Crucially, all final adhesives met the adhesive strength requirements specified by ASTM D-5751 standards, underscoring their suitability for wood bonding applications. The addition of CG enhanced the surface and volumetric hydrophobicity of the cured adhesives, resulting in adhesive properties that are not only stronger but also more weather-resistant. Although the thermal stability of the adhesives decreased with the inclusion of CG, FTIR analysis confirmed proper polyurethane polymer formation. The adhesive adjusted for a 2:1 CO:CG weight ratio promoted wood–wood bonding with the highest shear strength, likely due to a higher formation of urethane linkages between hydroxyl groups from the blend of polyols and isocyanate groups from the p-MDI.

show abstract

Section: Bond Properties At the Wood-to-wood Interface For Adhesive E...mentioning

confidence: 99%

Polyurethane Adhesives for Wood Based on a Simple Mixture of Castor Oil and Crude Glycerin

Peres,

Ribeiro,

Aramburu

et al. 2023

Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…Data from the Portuguese National Forest Inventory shows that maritime pine (Pinus pinaster) is the most common softwood in Portugal, representing 22% of the total [15]. Pine trees have rapid development and strong adaptation to varied environmental circumstances, so they are key raw resources that may satisfy some present market needs [16]. Because it has been utilized in construction as a raw material for furniture, poles, and posts, it is one of the most significant wood species in Portugal from an economic standpoint [17], [18].…”

Section: Introduction 567mentioning

confidence: 99%

Microwave Technology and Its Applications to Wood Treatment and Modification

Mascarenhas

Dias

Christofóro

et al. 2023

World Conference on Timber Engineering (WCTE 2023)

View full text Add to dashboard Cite

Humanity has utilized wood, a renewable resource, for a long time. To capitalize on all of the wood's advantages as a building, structural, and furnishing material, the wood industries and academics have continuously sought innovative approaches that lead to better and larger usage of wood. Microwave (MW) treatment is a technology that has gained increased popularity in modifying wood properties. It has been applied to improve the drying quality, increase fluid permeability, and enhance the treatability and impregnability of wood specimens. Therefore, this paper aims to present a summarized state of the art about MW treatment for wood modification and study the application of MW energy to drying wood samples of the Portuguese Pinus Pinaster, investigating the changes in the water uptake and compressive strength parallel to the grain of the MW-treated and control specimens. Based on the results, it was identified that there was an average energy consumption of 1233 MJ/m 3 and an average energy application of 3038 MJ/m 3 . In addition, the water uptake of MW-treated samples increased by four times, and their compressive strength parallel to the grain was reduced by 19 % compared to the control samples.

show abstract

“…It is a well accepted fact that manufacturing value-added composite from waste plastic would be considered as one of these approaches. There are past studies that have investigated the properties of WPCs manufactured from different wood species, including rubberwood [28][29][30][31][32]. However, there is almost none or very limited information on the properties of experimental panels with a combination of rubberwood particles, recycled plastic and silica.…”

Section: Introductionmentioning

confidence: 99%

Some Properties of Wood Plastic Composites Made from Rubberwood, Recycled Plastic and Silica

Chotikhun

Kittijaruwattana

Arsyad³

et al. 2022

Forests

View full text Add to dashboard Cite

The objective of this work was to evaluate some of the properties of experimental wood plastic composite (WPC) panels manufactured from a low percentage of rubberwood (Hevea brasiliensis Muell. Arg), waste polyethylene terephthalate (PET) and silica at three different ratios. It was determined that water absorption values of the samples decreased with the increasing amount of PET in the panels. The lowest absorption value of 0.34% was determined for the samples having 40% PET in their content as a result of 24-h soaking. The highest hardness value of 4492 N was found for the samples made with the combination of rubberwood, PET and silica at 10%, 40% and 50%, respectively. The compressive strength of WPC specimens also followed a similar trend with the hardness characteristics of the panel and improved with increasing PET percentage. Statistical analyses revealed that values of compression strength, hardness, 2-h and 24-h water absorption of the specimens made with 20, 30, and 40% PET content resulted in significant difference from each other (p ≤ 0.0001). Based on the findings in this study it appears that increasing silica content in the samples adversely influenced their mechanical properties while creating a certain level of enhancement of water absorption of the specimens. It seems that using a combination of waste PET and a limited amount of silica with a low percentage of wood particles could have the potential to produce value-added environmentally friendly composites to be used for different applications.

show abstract

Thermochemical and Mechanical Properties of Pine Wood Treated by In Situ Polymerization of Methyl Methacrylate (MMA)

Cited by 12 publications

References 34 publications

Polyurethane Adhesives for Wood Based on a Simple Mixture of Castor Oil and Crude Glycerin

Polyurethane Adhesives for Wood Based on a Simple Mixture of Castor Oil and Crude Glycerin

Microwave Technology and Its Applications to Wood Treatment and Modification

Some Properties of Wood Plastic Composites Made from Rubberwood, Recycled Plastic and Silica

Contact Info

Product

Resources

About