Synapse
⌘+K
Synapse
PulseExploreClubsResearchersJournals
Instagram
HomeClubsExplore
June 28, 2026Studies in Conservation

Investigation of pH-Dependent Wash Fastness of Indigo Carmine in Replica and Historical Textile Fibers

View Full Paper
Ask AI
Bookmark
Share

Authors

MSMya SpicherCalifornia State University, East BayPJPrianka JodgeCalifornia State University, East BayLVLaura Gisela García VedrenneFine Arts Museums of San Francisco

Discussion

Loading...

Member takes

Overview

Randomized trial assesses wash fastness of indigo carmine in textile fibers, indicating pH significantly affects color migration.

Key Points

  • This study aims to investigate the pH-dependent wash fastness of indigo carmine in historical and replica textile fibers.
  • Assessed pH-dependent wash fastness of wool samples dyed with indigo carmine and compared with natural indigo and madder as controls.
  • Conducted wash fastness tests at pH levels of 4, 5, 7, and 8.5 to evaluate dye migration.
  • Utilized absorbance spectroscopy and HPLC for identification of indigo carmine in historical samples.
  • Minimal dye migration observed at acidic pH, with higher migration at neutral pH, and the highest at pH 8.5.
  • Successfully detected indigo carmine in few-fiber samples through microextraction tests using sub-milliliter wash volumes.
  • Various factors like age, color, and degradation of fibers complicate the identification of indigo carmine.

Cite This Study

Spicher et al. (2026) studied this question.

synapsesocial.com/papers/6a40b92b61bb0a67205c5870https://doi.org/10.1080/00393630.2026.2688970
View Full Paper
Ask AI
Bookmark
Share