Table 1.

Purity of lignin (Klason lignin) and parameters obtained from size exclusion chromatography (SEC).

Lignin	Purity %	$\overline{{\mathit{M}}_{\mathit{N}}}$ g mol−1	$\overline{{\mathit{M}}_{\mathit{W}}}$ g mol−1	$\raisebox{1ex}{$\overline{{\mathit{M}}_{\mathit{W}}}$}\!\left/ \!\raisebox{-1ex}{$\overline{{\mathit{M}}_{\mathit{N}}}$}\right.$
Organosolv	79	266	1688	5.7
Kraft	67	317	1792	6.4
Phosphoric	80	579	7019	12.1