Wood chemical composition of selected fast growing species treated with NaOH. Part I: Structural substances.
Wood chemical composition of selected fast growing species treated with NaOH. Part I: Structural substances.
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DOI：
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发表时间：
2010
期刊：
影响因子：
1.3
通讯作者：
B. Doczekalska;M. Zborowska
中科院分区：
文献类型：
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作者：
B. Doczekalska;M. Zborowska
本研究旨在确定氢氧化钠浓度和处理持续时间对两种快速生长的木材树种（柳树和杨树）非结构成分的影响。用浓度为 10% 至 20% 的氢氧化钠溶液碱化柳木和杨木，可去除大量木材非结构物质。经过 NaOH 处理的柳木的乙醇-苯混合物中可溶物质的含量减少了约 80%，在冷水中减少了约 90%，在热水中减少了约 45%，在 1% NaOH 溶液中减少了约 50%。在杨木中测定了这些成分含量的较小变化：可溶于有机溶剂的物质减少了约 40%，可溶于 1% NaOH 的物质减少了约 30%。在用 10% NaOH 处理后，木质纤维素材料中记录了两种受检木材树种的最高质量损失。用氢氧化钠溶液处理的持续时间未能对所检查成分的数量变化产生显着影响。
In this study was to determine the impact of sodium hydroxide concentrations and duration of treatment on the non-structural constituents of two fast growing wood species: willow (Salix viminalis) and poplar. Alkalisation of willow and poplar wood with sodium hydroxide solutions of 10 to 20 % concentrations resulted in the removal of significant quantities of wood non-structural substances. The content of substances soluble in the ethanol-benzene mixture from willow wood treated with NaOH decreased by about 80%, in cold water – by about 90 %, in hot water – by about 45 % and in 1 % NaOH solution – by about 50%. Smaller changes in the content of these constituents were determined in poplar wood: substances soluble in organic solvents declined by approximately 40 % and substances soluble in 1% NaOH – by about 30 %. The highest mass losses for both of the examined wood species were recorded in the lignocellulosic material after treatment with 10 % NaOH. The duration of treatment with solutions of sodium hydroxide failed to exert a significant influence on quantitative changes in the examined constituents.