Photodegradation and photo stabilisation of wood - the state of the art
Photodegradation and photo stabilisation of wood - the state of the art
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DOI：
10.1016/j.polymdegradstab.2004.10.018
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发表时间：
2005-05-01
影响因子：
5.9
通讯作者：
Deglise, X
中科院分区：
文献类型：
--
作者：
George, B;Suttie, E;Deglise, X
在本文中，我们试图概述木材的光降解以及稳定这种复杂基质的不同可用方法。木材光降解的机制已经得到研究，结果表明木质素是关键结构，因为由于其发色团，这种成分能够在紫外/可见光区域吸收。因此，可以提供一些解决方案来保护木材免受光降解。最简单的方法之一是应用面漆，如油漆、涂料、清漆等，但也可以对基质进行化学改性（例如通过乙酰化）或通过热和光化学预老化来稳定其颜色。紫外线吸收剂、受阻胺光稳定剂（HALS）、抗氧化剂的使用以及新添加剂的最新发展有助于防止涂层木材系统的降解。（c）2004爱思唯尔有限公司。保留所有权利。
In this article we try to give an overview of the photodegradation of wood and the different ways available to stabilise this complex substrate. The mechanisms of wood photodegradation have been investigated and it appeared that lignin is the key structure because this component is able to absorb in the UV/visible region due to its chromophoric groups. Thus, some solutions can be offered to protect wood against photodegradation. One of the easiest consists in applying finishes such as paints, coatings, varnishes etc., but it is also possible to modify the substrate chemically (e.g. by acetylation) or to stabilise its colour by thermal and photochemical pre-weathering. The use of UV absorbers, HALS, antioxidants and the recent development of new additives help to prevent the degradation of the coated wood system. (c) 2004 Elsevier Ltd. All rights reserved.