Gel-particles for ink-jet paper coating applications

[摘要] ENGLISH ABSTRACT: An unsaturated, linear, aliphatic polyamide was synthesized from 1,6-hexanediamine andfumaric acid by means of a phosphorylation polycondensation reaction, and successfullycrosslinked with a vinyl monomer during an inverse suspension polymerization reaction.The two vinyl monomers that were used were 2-hydroxyethyl methacrylate (HEMA) and4-vinyl pyridine. The linear polyamide was characterized by means of nuclear magneticresonance (NMR) and electrospray mass spectrometry (ESMS), while the crosslinkedproduct was characterized by light scattering and scanning electron microscopy (SEM),as well as cryo-SEM. The average particle diameters of the crosslinked product werefound to be in the range of 100 to 300 nm.One of the synthesized crosslinked products was used in coating formulations on starchcoatedpaper. The paper samples were evaluated and compared on the basis of printingquality, colour density and colour uniformity of a printed image, as well as the wet-rubresistance of the coating. A formulation containing 0,1% of the HEMA crosslinkedpolyamide product was found to give the best performance of the printed image in termsof printing quality, colour density and colour uniformity. Wet-rub resistance was foundto improve with increasing concentration of the crosslinked polyamide product.

[发布机构] Stellenbosch University