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The characteristics of a coating system containing lawsone dye colorant and PMMA‐acrylic polyol blended resin

Z.H.Z. Abidin (Centre for Ionics University of Malaya, Physics Department, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia)
K.M. Nasir (Centre for Ionics University of Malaya, Physics Department, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia)
S.K.M. Jamari (Centre for Ionics University of Malaya, Physics Department, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia)
N. Saidon (Centre for Ionics University of Malaya, Physics Department, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia)
S.V. Lee (Centre for Ionics University of Malaya, Physics Department, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia)
N.A. Halim (Centre for Defence Foundation Studies, National Defence University of Malaysia, Kuala Lumpur, Malaysia)
R. Yahya (Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia)

Pigment & Resin Technology

ISSN: 0369-9420

Article publication date: 15 March 2013

363

Abstract

Purpose

The purpose of this work is to investigate the correlation characteristics in mechanical, thermal and optical properties of PMMA‐acrylic polyol polymer blends mixed with lawsone natural dye for coating paint application.

Design/methodology/approach

Natural brownish dye colorant was extracted from Lawsonia Inermis leaves used as a dye colorant in this paint coating system by using ethanol as the solvent. Poly(methyl methacrylate) (PMMA), blended with acrylic polyol was used as the binder system. The ratio of PMMA to acrylic polyol was varied with PMMA dominance. The dye colorant was fixed at 10 wt percent.

Findings

The potential time measurement tests showed that the dye colorant paint system with 10 wt percent of acrylic polyol has the highest coating resistance against electrolyte penetration. The dye colorant paint system with 30 wt percent acrylic polyol performed better in mechanical tests such as cross‐hatch and impact resistance. The dye colorant paint system molecular crosslinks were analysed by using the fourier transform infrared spectroscopy (FTIR) and X‐ray diffraction spectroscopy.

Research limitations/implications

The ratio of lawsone dye colorant in the polymer blends is found limited to 10 percent. Increasing in the percentage of lawsone dye colorant will cause inhomogeneity in coating paint sample.

Originality/value

A new formulation of natural dye colorant paint system with 10 percent wt dye volume concentration of lawsone as pigment was obtained.

Keywords

Citation

Abidin, Z.H.Z., Nasir, K.M., Jamari, S.K.M., Saidon, N., Lee, S.V., Halim, N.A. and Yahya, R. (2013), "The characteristics of a coating system containing lawsone dye colorant and PMMA‐acrylic polyol blended resin", Pigment & Resin Technology, Vol. 42 No. 2, pp. 128-136. https://doi.org/10.1108/03699421311301124

Publisher

:

Emerald Group Publishing Limited

Copyright © 2013, Emerald Group Publishing Limited

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