DIMENSIONAL STABILITY AND DECAY RESISTANCE AGAINST CONIOPHORA PUTEANA OF SCOTS PINE SAPWOOD DUE TO REACTION WITH PROPIONIC ANHYDRIDE

摘要

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 thatScots pine sapwood chemically modified with propionic anhydride afforded substantial bioprotection against Coniophora puteana. It required a weight gain of approximately 16% to 18% following reaction to ensure complete protection. The dimensional stability of propionic anhydride modified wood was greatly improved.