二氧化钛涂层与木材细胞壁超微结构相互作用的研究

Study of Interactions between Titanium Dioxide Coating and Wood Cell Wall Ultrastructure.

作者信息

Svora Petr, Svorová Pawełkowicz Sylwia, Ecorchard Petra, Plocek Jiří, Schieberová Alena, Prošek Zdeněk, Ptáček Petr, Pošta Jan, Targowski Piotr, Kuklík Petr, Jakubec Ivo

机构信息

University Centre for Energy Efficient Buildings, Czech Technical University in Prague, 273 43 Buštěhrad, Czech Republic.

Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, 182 21 Prague, Czech Republic.

出版信息

Nanomaterials (Basel). 2022 Aug 4;12(15):2678. doi: 10.3390/nano12152678.

DOI:10.3390/nano12152678

PMID:35957110

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9370405/

Abstract

Titanium dioxide (TiO) is used as a UV light absorber to protect wood matter from photodegradation. In this paper, interactions between wood and TiO coating are studied, and the efficiency of the coating is evaluated. For the experiments, two wood species were chosen: beech () and pine (). Molecular and physical modifications in coated and uncoated wood exposed to UV radiation were investigated with Fourier transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR) and transmission electron microscopy (TEM). UV-VIS spectroscopy was used to describe the absorption of UV light by the TiO planar particles chosen for the experiment. It was demonstrated that TiO coating protects wood against photodegradation to a limited extent. TEM micrographs showed fissures in the wood matter around clusters of TiO particles in beech wood.

摘要

二氧化钛（TiO₂）用作紫外线吸收剂，以保护木质材料免受光降解。本文研究了木材与TiO₂涂层之间的相互作用，并评估了涂层的效率。实验选用了两种木材：山毛榉（Fagus sylvatica）和松木（Pinus sylvestris）。采用衰减全反射傅里叶变换红外光谱（FTIR-ATR）和透射电子显微镜（TEM）研究了涂覆和未涂覆木材在紫外线辐射下的分子和物理变化。利用紫外可见光谱描述了实验所选TiO₂平面颗粒对紫外线的吸收情况。结果表明，TiO₂涂层在一定程度上保护木材免受光降解。透射电子显微镜图像显示，山毛榉木材中TiO₂颗粒簇周围的木质材料出现了裂缝。