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Table 1 Chemical composition of pinewood and bleached pulp

From: Maximizing production of cellulose nanocrystals and nanofibers from pre-extracted loblolly pine kraft pulp: a response surface approach

Component

Pine biomass (% w/w o.d.)

Purified cellulosea (% w/w o.d.)

Glucan

34.8 ± 0.4

90.8 ± 0.6

Xylan

6.8 ± 0.1

4.5 ± 0.0

Galactan

2.6 ± 0.1

1.6 ± 0.1

Mannan

10.0 ± 1.2

2.1 ± 0.0

Lignin

34.5 ± 2.0

0.6 ± 0.1

Extractives

14.0 ± 1.1

–

Total

102.8 ± 0.9

99.0 ± 0.4

  1. o.d. oven dry basis
  2. aPurified cellulose was produced in three stages: (1) dilute acid pretreatment, (2) kraft pulping and (3) sequential elemental chlorine free bleaching