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September 5, 2025Pigment & Resin Technology

Lightfastness of polypropylene pigmented with natural indigo of Isatis Tinctoria

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Authors

JJJuha JordanTLTielidy Angelina de Morais de LimaMNMichael Nugent

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Overview

This study demonstrates enhanced lightfastness of natural indigo in DMSO solution and polypropylene, suggesting purification is critical for effective applications.

Key Points

  • HCl purification significantly reduces impurities in natural indigo, improving its lightfastness.
  • Both DMSO and polypropylene samples of purified natural indigo exhibited increased lightfastness under testing.
  • Spectrophotometric methods verified absorption properties, aiding in the assessment of pigment quality.
  • Further research is encouraged on using indigo pigment in non-textile applications based on its enhanced properties.

Cite This Study

Jordan et al. (2025) studied this question.

synapsesocial.com/papers/68bb5f266d6d5674bcd03068https://doi.org/10.1108/prt-03-2024-0026
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Also Consider

Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1The development of indigo reduction methods and pre‐reduced indigo products2009 · 131 citations
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  4. 4Photoegradation of indigo in dichloromethane solution2003 · 57 citations