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Table 2 Lignin content in rigid polyurethane foams

From: Effect of replacing polyol by organosolv and kraft lignin on the property and structure of rigid polyurethane foam

Ratio of lignin to polyol

25/75

50/50

60/40

70/30

HKL in PU foam, % (w/w)

9

19

23

28

HEL in PU foam, % (w/w)

12

25

30

36

  1. Note: Ration of lignin to polyol, molar ratio of the hydroxyl groups from lignin to those from polyol (Voranol 270). HKL, hardwood kraft lignin; HEL, hardwood ethanol organosolv lignin; PU, polyurethane.
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Biotechnology for Biofuels and Bioproducts

ISSN: 2731-3654

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