New Biodispersant and Wetting Agent, Based on Natural Polypeptides, in Dispersing of Blue Phthalocyanine Pigment in Water-Based Paints

Document Type : Research

Authors

1 Department of Chemistry, Science and Research Branch, Islamic Azad University, P. O. Box: 14515-775, Tehran, Iran

2 Department of Science, Payame Noor University (PNU), P. O. Box: 19395-4697, Tehran, Iran.

3 Department of Chemistry, Science and Research Branch, Islamic Azad University, P. O. Box: 14515-775, Tehran, Iran.

10.30509/jscw.2025.167421.1213

Abstract

The present study marks the inaugural investigation into the impact of a semi-hydrolyzed protein (HP) solution derived from sheep wool on blue phthalocyanine pigment 15:3 within an aqueous system. The results indicate that the HP solution's amino acids, peptides, and polypeptides can effectively adhere to the surface of the 15:3 blue pigment. This interaction results in a reduction in pigment particle size and enhances the stability of the dye suspension. Furthermore, various factors such as performance, environmental stability, cost-effectiveness, and availability play a crucial role in determining the appropriateness of these dispersants for application in water-based paints. The method for producing the HP solution from sheep wool is economically advantageous and can be executed under mild conditions. The use of these additives does not pose significant environmental hazards. The HP solution, which contains low molecular weight amino acids, peptides, and polypeptides, can effectively coat the surface of blue phthalocyanine pigment particles, generating adequate electric repulsion and spatial resistance. Consequently, this mechanism mitigates the likelihood of collisions and interactions between pigment particles induced by Brownian motion, thereby reducing the tendency for aggregation. Notably, the HP demonstrated superior dispersing capabilities for the blue pigment 15:3 when compared to a commercial reference dispersant, underscoring the efficacy of the HP solution as a potent dispersant agent for this pigment.

Keywords

Main Subjects

References

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Journal of Studies in Color World
Volume 15, Issue 1
March 2025
Pages 65-76

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History

  • Receive Date: 21 November 2024
  • Revise Date: 18 February 2025
  • Accept Date: 19 February 2025

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