Topochemical and light microscopic investigations of non-enzymatic oxidative changes at the initial decay stage of furfuryl alcohol-modified radiata pine (Pinus radiata) degraded by the brown rot fungus Rhodonia placenta

Ehmcke, G.; Koch, Gerald; Richter, Klaus; Pilgård, Annica

doi:10.1016/j.ibiod.2020.105020

Cited by 5 publications

(3 citation statements)

References 57 publications

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“…The analysis of FA in the leaching medium of the water-saturated sample and each water change was performed using a UV spectrophotometer (UV-2600i, Shimadzu Sci-entific Instruments, Columbia, MD, USA): scanning range, 180-500 nm; reference sample, distilled water; scanning speed, 200 nm/min. All samples were tested under the same conditions [31,32].…”

Section: Analysis Of Leachatesmentioning

confidence: 99%

Leachability of Fast-Growing Wood Impregnated with Low Concentrations of Furfuryl Alcohol

Sun,

Gong,

Yan

et al. 2023

Forests

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Furfurylation can effectively improve the quality of fast-growing wood, but its leachability is unclear. In this study, fast-growing poplar (Populus sp.) and Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) were impregnated with low concentrations of 5%–20% furfuryl alcohol (FA), and the chemical and microscopic changes during leaching tests were analyzed by UV spectra and confocal laser scanning microscopy (CLSM). The results show that FA impregnation can regulate the weight percentage gain, but its effectiveness in regulating the cell wall bulking coefficient decreased as the impregnation concentration was increased. Impregnation with 15% and 20% FA showed no significant difference in the effect on volume swelling efficiency. The inverse relationship between the concentration of FA and the leaching rate was demonstrated by leaching tests, UV spectra, and CLSM. Notably, the leaching rate of poplar and Chinese fir wood was more than 30% when impregnated with 5% FA. Although the entirety of the furfuryl alcohol was deposited in the cell wall when impregnated with low concentrations of FA, the binding was not stable. The weight percentage gain of furfurylated Chinese fir was greater than that of poplar, but its leaching rate was lower, indicating that the cured furfuryl alcohol resin in poplar was not as stable as that in Chinese fir. Therefore, differences in tree species should be considered in low-concentration FA impregnation, as the improvement effect of concentrations below 10% on the properties of fast-growing wood is weak and the leaching rate of FA is significant.

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Section: Analysis Of Leachatesmentioning

confidence: 99%

Leachability of Fast-Growing Wood Impregnated with Low Concentrations of Furfuryl Alcohol

Sun,

Gong,

Yan

et al. 2023

Forests

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“…Moreover, FA can significantly enhance the dimensional stability, decay, and mildew resistance, compressive strength and hardness of wood and bamboo, and it does not affect the interfacial gluing properties of these products. More importantly, however, there have been no reported adverse environmental effects associated with the use or disposal of furfurylated wood 28 . Given these advantages, furfurylation appears to be an attractive way to upgrade low‐quality plantations for high‐value applications.…”

Section: Introductionmentioning

confidence: 99%

“…More importantly, however, there have been no reported adverse environmental effects associated with the use or disposal of furfurylated wood. 28 Given these advantages, furfurylation appears to be an attractive way to upgrade low-quality plantations for high-value applications. Unfortunately, although FA can improve the physical and mechanical properties of wood, it has the same flammability as natural wood.…”

mentioning

confidence: 99%

Dimensionally stable, flame‐retardant, and leach‐resistant furfurylated wood prepared by incorporating ammonium polyphosphate and nano‐silica

Shuqi

Hao

et al. 2023

Polymers for Advanced Techs

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Fast‐growing plantation typically has some undesirable inherent qualities that restrict their use as engineering materials, such as dimensional instability, poor mechanical strength, and flammability (Sangregorio et al., Green Chem, 2020, 22, 2786–2798; Zhang et al., Fire Saf J, 2021, 121, 103297). In this study, a simple and environmentally friendly method was applied to improve low‐quality poplar wood by building an organic–inorganic hybrid system with a combination of biomass‐derived furfuryl alcohol (FA), ammonium polyphosphate (APP), and nano‐silica (nano‐SiO2). Different amounts of APP and nano‐SiO2 were mixed with a FA water solution, impregnated into the poplar wood followed by curing at 103°C to induce in situ polymerization of furfurylated wood (FW). The results showed that the FW/APP/SiO2 had strong self‐extinguishing properties, and passed the UL‐94 V‐0 rating with a limiting oxygen index (LOI) value as high as 49.5%. Results from cone calorimetry and thermogravimetry suggested that APP and nano‐SiO2 could have a synergistic effect, which successfully inhibited heat transfer and suppressed the smoke emission during its combustion by promoting char formation. Scanning electron microscopy shows that FA, APP, and nano‐SiO2 can basically penetrate into the cell wall and modify the wood fundamentally. FW/APP/SiO2 also enhanced the phosphorus fixation in the wood and greatly reduced its leaching into water, indicating it has long‐term fire resistance in service.

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Cell wall changes during brown rot degradation of furfurylated and acetylated wood

Thygesen

Beck

Nagy

et al. 2021

International Biodeterioration & Biodegradation

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Topochemical and light microscopic investigations of non-enzymatic oxidative changes at the initial decay stage of furfuryl alcohol-modified radiata pine (Pinus radiata) degraded by the brown rot fungus Rhodonia placenta

Cited by 5 publications

References 57 publications

Leachability of Fast-Growing Wood Impregnated with Low Concentrations of Furfuryl Alcohol

Leachability of Fast-Growing Wood Impregnated with Low Concentrations of Furfuryl Alcohol

Dimensionally stable, flame‐retardant, and leach‐resistant furfurylated wood prepared by incorporating ammonium polyphosphate and nano‐silica

Cell wall changes during brown rot degradation of furfurylated and acetylated wood

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