An investigation into the sample preparation procedure and analysis of cyanoacrylate adhesives using capillary electrophoresis

Abstract

In this study, the trace acid profile of cyanoacrylate adhesives was studied using capillary electrophoresis. Liquid-liquid extraction was employed as the sample preparation step prior to separation by capillary electrophoresis. The solubility of the adhesives was investigated using various organic solvents, e.g. hexane and dichloromethane, and chloroform was determined to be the optimum solvent as it enabled the full dissolution of the adhesive. A comprehensive stability study was performed over a three-year period and results indicate that the adhesives were stable for two years after which their stability and performance degraded.

Determination of organic acids by CE and CEC methods

“…Whitaker et al [124] reported investigations on the sample preparation needed for the analysis of cyanoacrylate adhesives by CE. Besides some inorganic anions, formic acid (in pure monomer only) and cyanoacetic acid could be identified in the crude and pure monomer as well as the distillation residue.…”