Publisher: Chemical Society of Nigeria

Reactive Blending of Urea Formaldehyde and Polyethylene Waste: Optimization of Processing Viscosity.

S. A. Osemeahon, C. A. Archibong
KEYWORDS: urea formaldehyde, viscosity, polyethylene waste, Reactive Blending

ABSTRACT:

In this work, the effect of urea formaldehyde (UF) viscosity on a composite derived from reactive blending of UF with polyethylene (PE) was investigated. Some physical properties of the urea formaldehyde-polyethylene (UF/PE) obtained at different UF viscosities (13.60-27.60 mPa’s) were evaluated. The melting point, refractive index, density and formaldehyde emission were found to increase with increase in UF viscosity while the dry time, moisture uptake and elongation at break were found to decrease with increase in UF viscosity. UF viscosity below 24.04 mPa.s was found to produce (UF/PE) blend soluble in water and beyond this value the composite became insoluble in water. Thus processing of (UF/PE) blend for emulsion paint formulation could be suggested below this viscosity level. The result obtained from this experiment will offer formulator different options and to control formulation processes towards developing a paint binder for emulsion paint formulation from (UF/PE) blend, which may be acceptable to the coating industry


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