Effects of short-time vibratory ball milling on the shape of FT-IR spectra of wood and cellulose

• Published in: Vibrational spectroscopy Vol. 36; no. 1; pp. 23 - 40
• Main Authors: Schwanninger, M., Rodrigues, J.C., Pereira, H., Hinterstoisser, B.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 18.10.2004
• Subjects: Cellulose; FT-IR; Mechanical treatment; Picea abies; Vibratory ball milling; Wood; FT-IR; Vibratory ball milling; Mechanical treatment; Wood; Picea abies; Cellulose
• ISSN: 0924-2031; 1873-3697
• DOI: 10.1016/j.vibspec.2004.02.003

Vibratory ball milling is shown to have a strong influence on the shape of FT-IR spectra of wood and cellulose, even if the samples are milled for only a short time. The results show that neither temperature nor particle size or oxidation processes are the most important reason for the observed changes in the structure of the FT-IR spectra, but that the mechanical treatment itself is the main influencing factor. Studies of the effects of temperature, particle size, oxygen and mechanical treatment on chemical and structural changes are presented. The most conspicuous changes in the spectra of cellulose and wood were observed at wave numbers 1034, 1059, 1110, 1162, 1318, 1335, 2902 cm −1 and in the OH-stretching vibration region from 3200 to 3500 cm −1. It is suggested that these changes are mainly associated with a decrease in the degree of crystallinity and/or a decrease in the degree of polymerisation of the cellulose.