The wood-based panels largely represented by particleboard,
medium densityfiberboards (MDF), plywood and oriented strand
boards (OSB). These panels are the major constituent for the
production of wood furniture and other interior house constructions (i.e. flooring, wall paneling etc.). The global wood-based
panel market valued over US$ 80 billion in 2011[1]. Wood-based
panel are typically made with a heat-curing adhesive that holds
the woodfibers or wood-particles components together.
UF resin is one of the largely used adhesive for interior-grade
wood-based panels specially in particleboard (PB), a medium
densityfiberboard (MDF) manufacturing. It has some advantages
like fast curing, less in price and good mechanical strength of the
panels but has many drawbacks like lower water resistance, higher
emission of formaldehyde. The weakness of UF resins to hydrolysis
and the presence of free non-reacting formaldehyde in the panels
together responsible for the problem of formaldehyde emission
from the panels during manufacturing and service life.
The molar ratio of formaldehyde to urea (F/U) is the most
essential factor for affecting the formaldehyde emission liberation
from the panels. The formaldehyde emission can be lowered by
using the combination of UF resin and formaldehyde free adhesives
[2–4]. Several methods for manufacturing the low formaldehyde
emission panels have been studied, such as reducing formaldehyde
The wood-based panels largely represented by particleboard,medium densityfiberboards (MDF), plywood and oriented strandboards (OSB). These panels are the major constituent for theproduction of wood furniture and other interior house constructions (i.e. flooring, wall paneling etc.). The global wood-basedpanel market valued over US$ 80 billion in 2011[1]. Wood-basedpanel are typically made with a heat-curing adhesive that holdsthe woodfibers or wood-particles components together.UF resin is one of the largely used adhesive for interior-gradewood-based panels specially in particleboard (PB), a mediumdensityfiberboard (MDF) manufacturing. It has some advantageslike fast curing, less in price and good mechanical strength of thepanels but has many drawbacks like lower water resistance, higheremission of formaldehyde. The weakness of UF resins to hydrolysisand the presence of free non-reacting formaldehyde in the panelstogether responsible for the problem of formaldehyde emissionfrom the panels during manufacturing and service life.The molar ratio of formaldehyde to urea (F/U) is the mostessential factor for affecting the formaldehyde emission liberationfrom the panels. The formaldehyde emission can be lowered byusing the combination of UF resin and formaldehyde free adhesives[2–4]. Several methods for manufacturing the low formaldehydeemission panels have been studied, such as reducing formaldehyde
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