Ultraviolet paints based on nanopigments for printing on textile materials

Abstract

The effect of the modifier structure and content, as well as the dye structure, on the absorption on montmorillonite nanoparticles has been studied. The discovered dependencies have been used for obtaining nanopigments with high content of the coloring component based on cationic, direct, acid, active or disperse dyes. The effect of the coloring component on photopolymerization of the oligomer/monomer binder is estimated and the optimum compositions of ultraviolet (UV) paints with nanopigments are determined. It has been shown that developed UV paints possess higher light sensitivity compared with conventional organic pigments, and allow a dyed material with increased resistance to rubbing and tensile strength to be obtaining.

Photopolymerised Coatings with Nanopigments Based on Dye Mixtures

“…The latter circumstance is associated less with the "discreteness" of colours of individual dyes and more with the incapability of many of them to withstand the severe conditions of use in NPs, particularly during photopolymerisation in oligomer/monomer compositions. As shown previously, the colour range can be significantly improved using NPs based on dye mixtures [19,20].…”

“…NPs based on dye mixtures were prepared in accordance with the synthesis techniques for NPs based on individual dyes [21].…”

“…However, the development of a method for the preparation of organic pigments with a nano-sized structure is also of interest [12][13][14]. Intermediate to these research topics is the synthesis of hybrid organic-inorganic NPs [15][16][17][18][19][20][21], which can be achieved in particular by applying organic dyes on inorganic nanoparticles, such as natural montmorillonite [16] or montmorillonite modified by cationic surfactants (MMCS) [19][20][21]. The advantage of MMCS is the good compatibility of NPs with monomers, oligomers, and polymers, which significantly contributes to high colour quality.…”

“…This allows modification of the NPs' properties. An important additional argument was the availability of data obtained earlier for similar NPs based on individual dyes [21], as well as the high quality and commercial availability of the products.…”

Preparation of reactive nanoscale carbon black dispersion for pad coloration of cotton fabric

“…Pigments are important colourants that are widely used in textiles and printing due to their good light properties, plus they are excellent chemical reagents and have good whether fastness . However, pigments tend to aggregate in the aqueous phase due to their high surface energy, and this characteristic lowers their application in textile colouring .…”