Impacts of chemical modification of wood on water absorption: a review

Mendis, M.S.; Ishani, P. A. U.; Halwatura, RU

doi:10.1007/s13196-023-00309-y

Cited by 5 publications

(3 citation statements)

References 109 publications

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“…They lessen the hygroscopic qualities of the wood by preventing water molecules from penetrating the ber structure. As a result, there is less moisture interaction between the wood and its surroundings (Zhao et al 2023;Mendis et al 2023).…”

Section: Physical Property Analysismentioning

confidence: 99%

Preparation of multifunctional flame retardant composite wood by doping poplar cell walls with metal phytates

Shen,

Liu,

Wang

et al. 2024

Preprint

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Phytic acid as an efficient, green and renewable bio-based flame retardant. However, in view of the large number of toxic fumes generated during combustion and the easy loss of flame retardants, to tackle these issues, the current study employed a straightforward two-step process to generate phytate metal salt wood composites (PAN-M, M = Mg, Cu, Fe, Ai and Ni) in cell walls. Compared with natural wood (Control), PAN-M has good leaching resistance of 15 ~ 50 %, lower hygroscopicity of 15 ~ 30 % and improved mechanical strength. The total heat release and smoke emission of PAN-Cu are reduced by 34.54 % and 83.05 % respectively, the LOI of PAN-Cu is increased by 117 %, the smoke density SDR is only 8.38 and the weight gain is 16.9 %. This is mainly due to the apparent surface coke protection of metal phytates and catalytic graphitisation of solid residues by metal ions. The improved carbon layer plays an effective insulating role, limiting flue gas emissions, flame retardant loss and water contact. In addition, results show that PAN-Cu can significantly enhance the dehydration effect of carbon compared to other metal ions. Therefore, PAN-M is therefore an efficient, green and sustainable flame retardant for wood.

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Section: Physical Property Analysismentioning

confidence: 99%

Preparation of multifunctional flame retardant composite wood by doping poplar cell walls with metal phytates

Shen,

Liu,

Wang

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…However, when the moisture content decreases, the relative humidity does not decrease. Therefore, different moisture contents can be obtained at the same relative humidity (Mendis et al 2023). The hysteresis event can affect the water absorption capacity of the wood.…”

Section: Fig 2 Sem Images Of Micropcm In Woodmentioning

confidence: 99%

Properties of oak wood incorporating microencapsulated phase change material

Can

Ergün

Özlüsoylu

2023

BioRes

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Microencapsulated phase change materials (MPCMs) incorporated into oak wood via vacuum impregnation have shown promise as thermal energy storage (TES) materials. Physical and chemical properties of MPCMs and resulting Phase Change Energy Storage Wood (PCESW) were analyzed. Scanning electron microscopy and particle size analyses revealed similar particle sizes, while X-ray diffraction (XRD) and Fourier transform infrared spectra confirmed crystal phase and chemical structure. Thermal gravimetric analysis (TGA) and differential scanning calorimetry determined thermal properties, including phase change temperature, enthalpy, thermal stability, and conductivity. The MPCMs exhibited a phase change enthalpy of 146.0 J/g and temperature of 35.0 °C, with excellent thermal stability. The FTIR, XRD, and TGA analyses showed unchanged chemical structure, crystallinity ratios, and decomposition in two stages, respectively. The PCESW exhibited a latent heat storage of 3.02 J/g at 25.4 °C. Decay tests demonstrated noticeably reduced weight loss (1.22% and 1.55%) for MPCMW samples treated with Trametes versicolor and Coniophora puteana, compared to unleached control samples (19.7% and 20.8%). These findings indicate the high efficiency and potential of PCESW as a thermal energy storage material.

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“…Those methods could be applied separately and concurrently (Fadia et al 2023). Boron in sugi wood (Criptomeria japonica) with a modified heat treatment was leached after 10 days of weathering period (Mendis et al 2023). Heat treatment on Scots pine sapwood (Pinus sylvestris) and beech heartwood (Fagus sylvatica) at 150°C could retain boron by 2.7% and 4.1%, respectively.…”

Section: Introductionmentioning

confidence: 99%

The Hydrophilicity of Samama Wood Surface Quality after Boron, Methyl Methacrylate Impregnation, and Heat Treatment

Cahyono,

Priadi,

Novriyanti

et al. 2024

J. Sylva Lestari

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Indicators of surface roughness and surface-free energy can represent the improvement in wood surface quality. In this study, those two indicators were used to determine the change in the samama (Anthocephalus macrophyllus) wood surface following two modification steps, namely impregnation and heat treatment. The first step was boron impregnation in two forms applied separately, i.e., boric acid and borax. The second step was impregnation of methyl methacrylate followed by heat treatment at 90°C and 180°C. Surface roughness was determined following the ISO 4287:1997 standard, and surface free energy was analyzed using the Rabel Method. The results showed that the radial surface of samama wood naturally had a lower roughness than the tangential surface. Impregnation with boric acid, borax, and methyl methacrylate increased the wood surface roughness. However, heat treatment at 180°C tended to smooth the rough surface. Total surface free energy was altered after borax and methyl methacrylate impregnation. However, heat treatment seemingly withdrew the alteration. The polar components and dispersion contributed to total surface free energy with different compositions. In this study, the change in surface roughness was not congruent with the change in total surface free energy. Keywords: boron, heat treatment, impregnation, samama, surface free energy

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Impacts of chemical modification of wood on water absorption: a review

Cited by 5 publications

References 109 publications

Preparation of multifunctional flame retardant composite wood by doping poplar cell walls with metal phytates

Preparation of multifunctional flame retardant composite wood by doping poplar cell walls with metal phytates

Properties of oak wood incorporating microencapsulated phase change material

The Hydrophilicity of Samama Wood Surface Quality after Boron, Methyl Methacrylate Impregnation, and Heat Treatment

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