Title
Prediction of methoxyl groups content in lignin based on ultimate analysis
Authors
MICHAL JABLONSKY MARTINA BOTKOVA and JANA ADAMOVSKA

Received August 5, 2013
Published Volume 49 Issue 2 February
Keywords lignin, prediction, methoxyl groups

Abstract
Different lignins (44 samples) were used in this study for predicting the correlation between the content of methoxyl groups in lignin and the hydrogen and oxygen contents. A significant linear correlation was found between the content of methoxyl groups of the lignin and its H and O contents. The contents of O and H were determined by ultimate analysis in previous studies reported in literature. The content of methoxyl groups (wt%) of lignin was calculated using the following equation: OCH3 = -18.5769 + 4.0658(H) + 0.34543(O), where the correlation coefficient was 0.766. The average absolute error of this correlation is 13.9%.