“…40 Furthermore, the carbonyl peak at 1708 cm −1 was enhanced, and the band of the hydroxyl group (3500-3200 cm −1 ) was decreased. 41 The above results indicated that the isocyanate groups of IEMA successfully reacted with the hydroxyl groups of the wood, thus graing the carbon-carbon double groups to the wood. For the PDVB wood and IEMA-PDVB wood, the characteristic peaks at 709, 796, and 835 cm −1 are meta-and para-substituted aromatic rings and vinyl groups, respectively.…”