EH lignin had aliphatic and phenolic hydroxyl functionalities which provided very good bonding sites towards isocyanate.EH lignin could applied to modify polyurethane.

• 酶解木质素的分子中含有丰富的苯环、酚羟基和醚键等官能团,具有较高的反应活性,能直接用于聚氨酯的改性。