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Facile preparation of superhydrophobic wood surfaces via spraying of aqueous alkyl ketene dimer dispersions

机译:通过喷涂烷基酮二聚体分散体的超疏水木表面的容纳制备

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The prevention of excessive water uptake in wood in order to avert discoloration, swelling and decay is a major challenge for wood-based applications. We developed a facile surface treatment to protect wood from liquid water uptake that does not require harsh process conditions or toxic solvents. Water-based and surfactant-free dispersions of sub-micron alkyl ketene dimer wax particles were prepared and sprayed onto wood substrates. After the evaporation of water, the wax particles self-assembled into distinctive platelet structures. Depending on the specific conditions of application, water contact angles as high as 166 degrees were measured on treated wood surfaces. The implementation of sub-micro structures clearly reduced surface gloss but transparency and color remained largely unaffected. The method is comparably cost-effective and scalable, overcoming dimensional limitations crucial for many applications of wood.
机译:预防木材的过度水吸收以避免变色,肿胀和腐烂是木材的主要挑战。 我们开发了一种容易表面处理,以保护木材免受液体吸水,不需要苛刻的工艺条件或有毒溶剂。 制备水基和无表面活性剂分散体的亚微米烷基酮二聚体蜡颗粒并喷洒到木材基材上。 蒸发水后,蜡颗粒自组装成独特的血小板结构。 根据具体应用条件,在经处理的木材表面上测量高达166度的水接触角。 亚微观结构的实施明显减少了表面光泽,但透明度和颜色仍然很大程度上不受影响。 该方法具有较差的成本效益和可扩展,克服尺寸限制对于许多木材的应用至关重要。

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    《RSC Advances》 |2019年第42期|共11页
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  • 正文语种 eng
  • 中图分类 化学;
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