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Homogenization of Maritime Pine Wood Color by Alkaline Hydrogen Peroxide Treatment

机译：碱性氢过氧化氢处理海洋松木色的均质化

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The color of maritime pine wood is a critical parameter for manufacturing high added value materials (wood flooring or wood paneling for indoor applications). Actually, the color inhomogeneity between heartwood (Hw) and sapwood (Sw) can lead to a depreciation of the wood value and, therefore, to financial losses for wood products companies. In this article, the development of a color homogenization process based on alkaline hydrogen peroxide chemistry was studied. Maritime pine heartwood and sapwood powders were used to facilitate the chemical characterizations and colorimetric analyses by the CIEL*a*b* system. Brighter materials were obtained after the treatment by reducing significantly the color difference. The chemical modifications of wood surface were characterized by infrared spectroscopy analyses. The color evolution of the material overtime was also studied thanks to an accelerated ageing under UV irradiation. It was demonstrated that even if a color reversion occurred by oxidation, the color remained homogeneous between heartwood and sapwood.
机译：海洋松木的颜色是制造高附加值材料的关键参数（用于室内应用的木地板或木材镶板）。实际上，心材（HW）和Sapwood（SW）之间的颜色不均匀可能导致木材价值的折旧，因此，对木制品公司的金融损失。在本文中，研究了基于碱性过氧化氢化学的颜色均质化过程的发展。 Maritime Pine Ceartwood和Sapwood粉末用于促进CIEL * A * B *系统的化学特征和比色分析。通过显着降低颜色差异，在处理后获得更亮的材料。木表面的化学修饰是通过红外光谱分析的特征。由于UV照射下的加速老化，还研究了材料加班的颜色演变。据证明，即使氧化发生颜色逆转，颜色也仍然在心材和Sapwood之间均匀。

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