A Note on the Influence of Pretreatment on the Photodiscoloration by UV Light as a Function of Energy of Wood

Author

Guo, Minghui ; Guan, Xin

Author_Institution

Key Lab. of Bio-Based Mater. Sci. & Technol. of Minist. of Educ., Northeast Forestry Univ., Harbin, China

fYear

2010

fDate

18-20 June 2010

Firstpage

1

Lastpage

4

Abstract

The effect of the pretreatment by acid and bleacher on color changes and FT-IR spectra of wood surfaces of B. platyphylla due to irradiation has been examined. To monitor the relationship, L*, a*, b*, △E* parameters and FT-IR spectra of samples´ surface were analyzed quantitatively by spectrophotometer and FT-IR at the different irradiation time. Irradiation time was altered between 24, 48, 72, 96 and 120 h. Our findings showed that acid treatment promoted photo-discoloration and bleaching treatment enhanced the lightness value and b* value. The changes of the surface colors were related to carbonyl compounds, phenolic hydroxyl, paraquinones, ortho quinine and so on.

Keywords

Fourier transform spectra; bleaching (materials processing); colour; infrared spectra; photochemistry; wood; wood processing; B. platyphylla; FTIR spectra; UV light; acid treatment; bleaching treatment; carbonyl compounds; lightness value; ortho quinine; paraquinones; phenolic hydroxyl; photodiscoloration; time 0 h to 120 h; wood surfaces; Application software; Bleaching; Chemical analysis; Color; Condition monitoring; Forestry; Humidity; Materials science and technology; Surface treatment; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on

Conference_Location

Chengdu

ISSN

2151-7614

Print_ISBN

978-1-4244-4712-1

Electronic_ISBN

2151-7614

Type

conf

DOI

10.1109/ICBBE.2010.5515379

Filename

5515379