. 2018 Dec 10;8(71):40765–40777. doi: 10.1039/c8ra08579j

Characterization of the kraft lignin: SEC molecular weight and polydispersity (PD), OH content according to ISO 14900 and ³¹P NMR.

Lignin	M _w [g mol⁻¹]	M _n [g mol⁻¹]	PDI	T _g [°C]	OH content (ISO 14900)		Eq. weight [g mol⁻¹]	Functionality	³¹P – NMR
Lignin	M _w [g mol⁻¹]	M _n [g mol⁻¹]	PDI	T _g [°C]	[mmol g⁻¹]	(mg KOH) g⁻¹	Eq. weight [g mol⁻¹]	Functionality	Aliph. OH [mmol g⁻¹]	Phenol. OH [mmol g⁻¹]	Aliph./total [%]	OH aliph./molecule	OH arom./molecule
pH 2	1879	574	3.3	148	2.67	150	375	1.5	5.0	3.6	59	0.9	0.6
pH 3	1732	538	3.2	147	4.48	251	223	2.4	7.3	5.9	55	1.3	1.1
pH 4	1570	441	3.6	143	5.02	282	199	2.2	13.3	12.5	51	1.1	1.1
pH 5	1502	490	3.0	134	5.35	300	187	2.6	19.0	18.2	51	1.3	1.3

Characterization of the kraft lignin: SEC molecular weight and polydispersity (PD), OH content according to ISO 14900 and 31P NMR.