Effect of alcoholic solvents on urea-biuret morphology

Nowadays, urea is a critical ware concoction utilized primarily in the compost and plastics businesses. It is by and large created by a high weight response amongst alkali and carbon dioxide amid which little amounts of the dimer disintegration item biuret are shaped. In many procedures a crystallization step is utilized to create the last item. The purpose of this research study is to evaluate the influence of alcoholic solvents on morphological growth of urea-biuret crystal and to assess the morphological characteristics of urea-biuret crystal by using optical microscope and analytical analysis. The unmodified and modified urea were analyzed by using optical microscope, DSC and FT-IR in order to study the morphological growth, thermal analysis and chemical composition respectively. From the morphology characterization by using optical microscope, it can be concluded that modified urea dissolved in ethanol with the addition of biuret at mole ratio (2:5) produced the best morphology of crystal compared in 2- propanol and iso-butanol. For thermal analysis by using DSC, it can be concluded that modified urea in ethanol that are first to form first small peak to reach its melting point but are not fully crystallized until the second peak that is more larger formed. This results can support the previous research that modified urea dissolved in ethanol has the higher solubility. Next for FT-IR analysis result, it can be concluded that IR graph of the unmodified and modified urea showed almost the same functional groups with little exception of some examples.