Synthesis and characterization of copper phthalocyanine and tetracarboxamide copper phthalocyanine deposited mica-titania pigments

Topuz B. B., GÜNDÜZ G., MAVİŞ B., Colak U.

DYES AND PIGMENTS, vol.96, no.1, pp.31-37, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 96 Issue: 1
  • Publication Date: 2013
  • Doi Number: 10.1016/j.dyepig.2012.06.010
  • Journal Name: DYES AND PIGMENTS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.31-37
  • Keywords: Effect pigments, Combination pigment, Mica-titania, Copper phthalocyanine, Combination pigment, Beta polymorph, MICROWAVE-ASSISTED SYNTHESIS, METAL-FREE PHTHALOCYANINE, TRANSFORMATION, POLYMERS
  • Middle East Technical University Affiliated: Yes


Combination pigments were synthesized by the deposition of copper phthalocyanine and tetracarboxamide copper phthalocyanine on a mica-titania pigment in dimethyl formamide solvent to improve color properties. The MIR and XRD analyses were performed to observe the crystal transformations of the pigments on the substrate. The stable beta form of copper phthalocyanine normally preferred in paint applications was obtained at 90 degrees C and 120 degrees C, while tetracarboxamide copper phthalocyanine remained amorphous at all temperatures experimented. Pigment surface morphologies were investigated by SEM analysis. Copper phthalocyanine crystalline rods were observed on the mica-titania substrate, however, the tetracarboxamide copper phthalocyanine pigment did not exhibit any such crystalline structure due to its amorphous structure, which was confirmed by XRD analysis. Furthermore, nitrogen elemental analysis was performed to determine the amount of copper phthalocyanines adsorbed to the mica-titania surfaces at different temperatures. The resulting combination pigments showed enhanced luster, good dispersion, hue, and high color intensity. (c) 2012 Elsevier Ltd. All rights reserved.