Structures, and Reactivities with Formaldehyde, of Some Acetosolv Pine Lignins

Abstract Lignins obtained from pine by the acetosolv process under various operating conditions were characterized structurally by elemental and methoxyl analyses, and FTIR. and NMR spectroscopy, and their reactivity with formaldehyde was determined. The reactivity results, including NMR quantification of the introduced methylol groups, suggest that the methylolated lignins are suitable for the formulation of adhesives.