Dimensional stability and decay resistance against Coniophora puteana of Scots pine sapwood due to reaction with propionic anhydride.

The purpose of this paper is to show the effects of level of substitution with a linear chain anhydride (propionic anhydride) on dimensional stability and decay resistance of modified Scots pine sapwood. The work described herein has demonstrated that chemically modified Scots pine sapwood with propionic anhydride afforded substantial bioprotection against Coniophora puteana. It required a weight gain of approximately 16-18% following reaction to ensure complete protection. The dimensional stability of propionic anhydride modified wood was greatly improved.