Two sets of pigmented inkjet inks with various pigment-to-binder ratios (1/0.5, 1/1.0, 1/0) were prepared. The first ink set was made by polymer dispersion, while the second set was produced from microencapsulated pigments. The inks were prepared by mixing slowly with an polyacrylate binder in ethylene glycol, glycerin solvent, urea and, sodium hydroxide additives to give stable inks. Ink viscosity, pH and surface tension were measured and the inks were printed on cotton fabrics padded with an aqueous dispersion of poly(vinyl alcohol) and alumina. The printed fabrics were evaluated for color value, air permeability, fabrics stiffness and dry & wet crockfastness. Increasing pigment/binder ratios have little impact on ink surface tension, and viscosity. All the printed fabrics show almost the same color gamut, All ratios created acceptable printed fabrics, but rather poor crockfastness was observed in the softer binders. Superior fabrics properties were printed when polymer dispersion was used. This article describes pigment/binder ratios affecting the properties of inks and printed fabrics.
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