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DIMENSIONAL STABILIZATION OF WOOD BY REACTIVE POLY(ETHYLENE GLYCOL)-DIACRYLATE CELL WALL BULKING

机译:反应性聚(乙二醇) - 二氧化酯细胞壁膨胀尺寸尺寸稳定

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The dimensional stabilization of wood by chemical means is of interest in order to prevent shrinkage and swelling due to changes in relative humidity of the surrounding environment. Cell wall bulk stabilization by poly(ethylene glycol), PEG, is a well-known example, although with disadvantage of only being deposited in the cell wall, not bonded, allowing for migration when exposed to further humidity. In the present study bulk stabilization using reactive poly(ethylene glycol)-diacrylate, PEGDA, is investigated. It allows waterborne treatment of wood, which after polymerization induced by electron beam treatment, leads to formation of a wood polymer composite with improved dimensional stability. By monitoring swelling behaviour the location of PEGDA in the wood cell walls is affirmed and explains the dimensional stabilization by its bulking effect.
机译:通过化学装置的木材尺寸稳定是有意义的,以防止由于周围环境的相对湿度的变化而导致的收缩和肿胀。通过聚(乙二醇),PEG的细胞壁稳定化是众所周知的例子,尽管仅缺点仅在细胞壁中沉积,而不是粘合,但在​​暴露于进一步的湿度时允许迁移。在本研究中,研究了使用反应性聚(乙二醇) - 丙酸酯,PEGDA的批量稳定化。它允许木材的水性处理,在电子束处理诱导的聚合之后,导致木聚合物复合物的形成,其具有改善的尺寸稳定性。通过监测肿胀行为,肯定了木细胞壁中PEGDA的位置,并通过其膨胀效果解释了尺寸稳定。

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