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Incorporating hydrogels into fingermark development: indicative viscosities for preserving ridge detail on paper
Kristen T Clarke1, Scarlet L Hopkins1, William J Gee1
1School of Environment and Science, Griffith University, 170 Kessels Road, Brisbane, QLD 4111, Australia. W.Gee@griffith.edu.au.
Analytical Methods : Advancing Methods and Applications
|October 28, 2022
Abstract:
Water-based fingermark development treatments for paper have long been held back by loss of ridge detail due to diffusion. Viscous hydrogels (≥2224 cP) show promise as a green method of delivering chemical developers that inhibits diffusion, thereby preserving fingermark ridge detail. This is demonstrated here with starch and xanthan gum hydrogels applied to iodine-fumed fingermarks.
