Abstract
The kinetics of the pyridine-catalyzed reaction of succinic anhydride (SA) and octenyl succinic anhydride (OSA) with Scots pine (Pinus sylvestris) have been investigated, and activation energies determined. The activation energies for surface reactions between wood and SA or OSA were determined as 79.5 (±13.0) and 29.6 (± 4.6) kJ/mol respectively. The low value of the latter activation energy, suggests that hydrogen bond breaking is a rate determining step with the reaction of OSA with wood. With SA the activation energy is of a similar magnitude to literature values for anhydride-alcohol reactions. The kinetics of reaction over extended time was analysed to see if diffusion dominated the process, complex profiles were observed which were not amenable to simple analysis.
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