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Preparation and characterisation of silica supported organic hybrid pigments

Yong Zhang (Department of Chemistry, Tianjin Chengjian University, Tianjin, China)
Xuening Fei (Department of Chemistry, Tianjin Chengjian University, Tianjin, China)
Lu Yu (Department of Chemistry, Tianjin Chengjian University, Tianjin, China)
Lingyun Cao (School of Chemical Engineering and Technology, Tianjin Chengjian University, Tianjin, China)
Baolian Zhang (Department of Chemistry, Tianjin Chengjian University, Tianjin, China)

Pigment & Resin Technology

ISSN: 0369-9420

Article publication date: 3 November 2014

Abstract

Purpose

The purpose of the work reported in this paper is to prepare hybrid pigments fabricated by depositing pigment yellow 12 (PY12) on the surface of silica gel to improve the application performance of the resulting pigments. The particle size distribution, optical properties, thermal stability, water dispersibility and flowability of the pigments with and without silica gel modification were studied.

Design/methodology/approach

The hybrid pigments were synthesised with different amount of silica gel. The modified pigments were characterised by Fourier transforms infrared spectroscopy, X-ray diffraction, thermal analysis, scanning electron microscopy and transmission electron microscopy.

Findings

The particle size distribution of the modified pigments was found to have been altered significantly. This can be explained by the interaction between pigments and silica gel, which prevented self-aggregation of pigment particles and hence improved the properties of pigments.

Research limitations/implications

Only silica supports and pigment yellow 12 were evaluated. Other pigments could also be studied.

Practical implications

Modification of pigment particles with smaller particle size can increase the efficiency of the modified pigment, in terms of colour shade and tinting strength, due to better particle size distribution.

Originality/value

The paper demonstrates that inorganic core can prevent self-aggregation of pigment particles, and the application properties of such pigment depend on the resulting degree of dispersion of pigment particles.

Keywords

Citation

Zhang, Y., Fei, X., Yu, L., Cao, L. and Zhang, B. (2014), "Preparation and characterisation of silica supported organic hybrid pigments", Pigment & Resin Technology, Vol. 43 No. 6, pp. 325-331. https://doi.org/10.1108/PRT-10-2013-0087

Publisher

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Emerald Group Publishing Limited

Copyright © 2014, Emerald Group Publishing Limited