Performance study of a superhydrophobic nanocellulose membrane on the surface of a wood-based panel prepared via the sol-gel method

IF 4.7 3区材料科学 Q2 CHEMISTRY, PHYSICAL Colloid and Interface Science Communications Pub Date : 2023-11-01 DOI:10.1016/j.colcom.2023.100758

Xingzhou Yao , Wanying Zhao , Haiqiao Zhang , Yanbing Zhang , Linjun Zhong , Yan Wu

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Abstract

The scarcity of wood resources in China has led to the development of wood-based panels. However, wood-based panels often exhibit hydrophilicity and require veneering. This paper presents a solution to this problem in which a composite membrane is prepared using nanocellulose (CNF) and polyvinyl alcohol (PVA) through the hot pressing method. The surface of the composite membrane is then coated with silica nanoparticles using the sol-gel method to achieve a superhydrophobic effect. The coating has a surface hardness of 5H, adhesion of 0, gloss of 20% Gu, colour difference of 3.11, and impact resistance of 19 kg.cm. The resulting modified wood-based panel has a contact angle of 166.8° and a sliding angle of 5.3°, indicating excellent self-cleaning properties and chemical stability. This innovation promotes the use of wood-based panels in high-humidity environments and offers new research avenues for the high-value utilization of nanocellulose.

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溶胶-凝胶法制备人造板表面超疏水纳米纤维素膜的性能研究

中国木材资源的稀缺导致了人造板的发展。然而，人造板往往表现出亲水性，需要贴面。本文提出了一种以纳米纤维素(CNF)和聚乙烯醇(PVA)为原料，通过热压法制备复合膜的方法。然后用溶胶-凝胶法在复合膜表面涂覆二氧化硅纳米颗粒，以达到超疏水效果。涂层表面硬度5H，附着力0，光泽度20% Gu，色差3.11，抗冲击性19 kg.cm。所得改性人造板的接触角为166.8°，滑动角为5.3°，具有良好的自清洁性能和化学稳定性。这一创新促进了人造板在高湿度环境中的使用，并为纳米纤维素的高价值利用提供了新的研究途径。

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来源期刊

Colloid and Interface Science Communications Materials Science-Materials Chemistry

CiteScore

9.40

自引率

6.70%

发文量

125

审稿时长

43 days

期刊介绍： Colloid and Interface Science Communications provides a forum for the highest visibility and rapid publication of short initial reports on new fundamental concepts, research findings, and topical applications at the forefront of the increasingly interdisciplinary area of colloid and interface science.