Effect of the properties by the composites
The deformation and metamorphism of wood are
always caused by moisture and external moisture
penetrates to the interior of the wood easily as the
porosity of wood itself. Scanning electron
micrographs(SEM) of treated wood shown in (Figs.
5 and 6) indicated that some porosity of the treated
wood were filled with the nano-UFP composites, so
that external moisture were hardly to penetrate to
the interior of the wood and the bulking coefficient
and water absorption decreased. In themeanwhile,
cross-linking reaction between the resin and wood
fiber also increased the strength of wood.