Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2754

Full Length Research Paper

Optimization of the copolymerization reaction between methylol urea and polyester: Effect of viscosity on some physical properties of the copolymer composite

S. A. Osemeahon1*, I. I. Nkafamiya1, D. Haggai1 and W. O. Medjor2
1Department of Chemistry, Federal University of Technology, Yola, Nigeria. 2Department of Chemistry, Taraba State University, Jalingo, Nigeria.
Email: [email protected]

  •  Accepted: 10 May 2010
  •  Published: 04 September 2010

Abstract

In our continuous desire to develop a paint binder from amino resin, the effect of urea formaldehyde (UF) viscosity on a copolymer composite derived from the copolymerization reaction between methylol urea (MU) and triethanolamine (TEA) to give methylol urea/triethenolamine copolymer composite (MUT) was investigated. Some physical properties of MUT obtained at different viscosities (4.11 - 255.00 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 155.00 mPa.s was found to produce MUT copolymer composite which is ductile and soluble in water. The processing of MUT copolymer resin for emulsion paint formulation should be carried out below this viscosity level. The results obtained from this experiment will offer formulator different options and to control formulation processes towards developing MUT copolymer composite as a paint binder for emulsion paint formulation.

 

Key words: Copolymerization, viscosity, paint binder.