ABSTRACT:
Research Article
Synthesis, Characterization and Glass -
reinforced Composites of
N,N'-Dimethylolthiourea – m-Aminophenol
resin
K.D. Patel*, M.M. Morekar and Y.S. Tilak
Chemistry Department, V.P. & R.P.T.P. Science College,
Vallabh Vidyanagar - 388 120. Gujarat, India.
N,N’-Dimethylolthiourea (DMTU) resin having the methylol group ( – CH2OH ) has been prepared and characterized. The condensation of DMTU resin with m-aminophenol was carried out in the presence of alcoholic alkali catalyst at varying ratios of DMTU: mAP, namely 1:1, 1:1.5 and 1:2. The resultant DMTUmAP resin was characterized by elemental analysis, IR spectral studies, number average molecular weight estimated by non-aqueous conductometric titration, and thermogravimetry. The curing study of DMTUmAP resin with hexamethylenetetramine (HMTA) was monitored by differential scanning calorimetry (DSC) and kinetic parameters were evaluated. Glass-reinforced composites based on the DMTUmAP-HMTA system have also been prepared and characterized.
