APPLICATION OF ATR INFRARED SPECTROSCOPY IN WOOD ACETYLATION

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MOHEBI BEHBOUD

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST) Year:2008 | Volume:10 | Issue:3 Page(s): 253-259

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Title

APPLICATION OF ATR INFRARED SPECTROSCOPY IN WOOD ACETYLATION

Author(s)

MOHEBI BEHBOUD | Issue Writer Certificate

Keywords

ACETYLATION

ACETYL GROUPS

ATTENUATED TOTAL REFLECTION

INFRARED SPECTROSCOPY

BEECH

IR-SPECTROSCOPY

Abstract

ACETYLATION is a chemical modification of wood to enhance its properties. IR-SPECTROSCOPY is a useful technique for proofing chemical bandings in wood and the ATTENUATED TOTAL REFLECTION (ATR) INFRARED SPECTROSCOPY technique was applied as an easier technique over other IR-spectroscopes. In this research, different degrees of ACETYLATION, weight percentage gains (WPGs) in BEECH and pine mini-stakes were achieved by using acetic anhydride. Acetylated samples were analyzed by applying an ATTENUATED TOTAL REFLECTION (ATR) INFRARED SPECTROSCOPY technique. Comparison of the acetylated samples with non-acetylated woods showed that hydroxyl groups (O-H) were diminished at wave numbers of about 3,354-3,328 cm-1 due to the substitution of hydrophobic ACETYL GROUPS in cell wall polymers. A strong peak appeared at wave numbers of about 1,733-1,728 cm-1 in BEECH and 1,737-1,728 cm-1 in pine due to the carbonyl (C=O) stretching of ACETYL GROUPS. The magnitude of the bands increased with raising the weight percentage gains (WPGs). The methyl deformation of the ACETYL GROUPS induced at wave number 1369 cm-1 caused by the stretching of C-H in polysaccharides. There was also a clear increase in the magnitude of the wave numbers at about 1234-1226 cm-1 in BEECH and 1236-1226 cm-1 in pine due to the stretching of C-O and carbonyl deformation in the ester bonds during the ACETYLATION of lignin.

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APA: Copy

MOHEBI, BEHBOUD. (2008). APPLICATION OF ATR INFRARED SPECTROSCOPY IN WOOD ACETYLATION. JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST), 10(3), 253-259. SID. https://sid.ir/paper/553865/en

Vancouver: Copy

MOHEBI BEHBOUD. APPLICATION OF ATR INFRARED SPECTROSCOPY IN WOOD ACETYLATION. JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST)[Internet]. 2008;10(3):253-259. Available from: https://sid.ir/paper/553865/en

IEEE: Copy

BEHBOUD MOHEBI, “APPLICATION OF ATR INFRARED SPECTROSCOPY IN WOOD ACETYLATION,” JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST), vol. 10, no. 3, pp. 253–259, 2008, [Online]. Available: https://sid.ir/paper/553865/en

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