VISCOSITY PROPERTIES FOR AQUEOUS-SOLUTION OF URETHANE ACRYLATE CATIONOMER

Water-soluble and UV-curable urethane acrylate cationomer was synthesi zed incorporating N-methyldiethanol amine (MDEA) on the molecular back bone and its viscosity properties were examined with respect to shear rate, temperature, and weight fraction of resin. All shear rates showe d shear rate independence within given fraction regions. The viscosity trends of urethane acrylate cationomer solutions followed the Arrheni us equation well. The logarithmic infinite viscosity and activation en ergy showed linear relationship with the fraction below the weight fra ction of 0.325. However, above the fraction of 0.325, the deviation fr om linear relationship was observed. This was believed to be attribute d to the intermolecular interactions among molecular chains. From the obtained linear correlation of the logarithmic infinite viscosity and activation energy with the fraction, rheological equation of state was proposed. The viscosities obtained from the equation of state success fully corresponded to the results of experiments.