Rapid Characterization of Wood Pulp Lignin by Fourier Transform Raman Spectroscopy

✍ Scribed by Amin Ibrahim; Philip B. Oldham; Terrance E. Conners; Tor P. Schultz

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 102 KB
• Volume: 56
• Category: Article
• ISSN: 0026-265X
• DOI: 10.1006/mchj.1996.1455

✦ Synopsis

FT-Raman spectroscopy is used for the rapid measurement of wood pulp lignin. A total of 23 western softwood pulp samples with known kappa numbers (10 -38) are used. Each sample is divided into three portions and scanned separately. The integrated area of the lignin band at approximately 1600 cm 01 is ratioed against the integrated area of the cellulose bands in the 1200 -1010 cm 01 region and correlated to known kappa numbers. The measured ratios behave linearly with the kappa number (r Å 0.99) and can be reproducibly determined with an error of approximately 2% or less. The data are presented and discussed in view of the potential for at-line analysis of lignin associated with chemical delignification of wood pulp.