MUF Resins Improved by Citric Acid as Adhesives for Wood Veneer Panels

This article presents the first applied results of using citric acid in combinations with a melamine-urea-formaldehyde (MUF) resin for bonding wood veneers. The chemical reactions involved are shown based on MALDI ToF analysis reaction MUF acid. preliminary physical and mechanical properties LVL prepared also presented. Veneers from Populus sp were used to manufacture 5-layer laminated veneer lumber (LVL) small dimensions. Five amount acid, spread rate pressing parameters tested. bonded 20% + 100 g/m2 MUF, hot-pressed 3-step process maximum 1.5 MPa pressure yielded board better dimensional stability properties. It could be concluded that combination can research should continued study further enhance results.