Table 2.
Particle Proportions and Contents of the 1% NaOH Extract, Klason Lignin, and Acid-soluble Lignin of the Bark Powders of Various Particle Sizes

Powder size (µm)	Proportion (%)	1% NaOH extract (%)	Lignin (%)
Powder size (µm)	Proportion (%)	1% NaOH extract (%)	Klason	Acid-soluble	Total
Non-sieved bark (1 mm pass)	100	69.60	14.44	0.22	14.66
40 mesh (≥425)	6.4	57.24	21.66	0.37	22.03
40-80 mesh (180 425)	32.1	64.26	16.64	0.23	16.87
80-100 mesh (150 180)	40.4	70.32	14.28	0.16	14.44
100-200 mesh (75 150)	12.2	76.67	11.26	0.12	11.38
200 mesh pass (≤75)	8.9	86.62	6.44	0.08	6.52