Effect of UV exposure on the surface chemistry of wood veneers treated with ionic liquids

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• 作者：Silvia Patachia^a ; ^{st.patachia@unitbv.ro} ; Catalin Croitoru^a ; ^{c.croitoru@unitbv.ro} ; Christian Friedrich^b
• 关键词：Ionic liquids ; Wood veneers ; UV irradiation ; Image analysis ; FTIR spectroscopy ; Surface energy
• 刊名：Applied Surface Science
• 出版年：2012
• 期刊代码：6_01694332
• 类别：ms
• 出版时间：1 July, 2012
• 卷：258
• 期：18
• 页码：6723-6729
• 文件大小：1042 K

摘要

In this paper, the influence of four types of imidazolium-based ionic liquids (ILs) on the chemical alteration of the surface of wood veneers exposed to 254 nm UV irradiation have been studied by using image analysis, Fourier transform infrared spectroscopy and surface energy calculation. The wood treated with ionic liquids showed better stability to UV light, as demonstrated by the low lignin, carbonyl index and cellulose crystallinity index variation, as well as very small color modification of the surface with the increase of the UV exposure period, by comparing to non-treated wood. The results show that the tested ionic liquids could be effective as UV stabilizers.