Fig. 5From: Urea-formaldehyde microspheres as a potential additive to wood adhesiveCross sections of wood specimens after adhesive bond strength testing stained with Brilliant Sulphaflavin and Gentian Violet. Reference specimen (0.0:1) in pseudo colour (a) and as binary picture (b) where glue and the veneer’s bottom line are black. Same ratio microspheres and UF-resin (1.0:1) in pseudo colour (c) and as binary picture (d)Back to article page