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Photochromic Print's Distinct Photo-Fading Characteristics under Continuous UV Irradiation Measurement Modes Cover

Photochromic Print's Distinct Photo-Fading Characteristics under Continuous UV Irradiation Measurement Modes

Fibres & Textiles in Eastern Europe
Volume 33 (2025): Issue 1 (May 2025)
By: Utkarshsinh B Solanki,  Martina Viková and  Michal Vik  
Open Access
|Oct 2025

Figures & Tables

Fig. 1.

Unimolecular photochromic systems and a class of diabatic photoreactions
Unimolecular photochromic systems and a class of diabatic photoreactions

Fig. 2.

General kinetic profile curve of a photochromic cycle
General kinetic profile curve of a photochromic cycle

Fig. 3.

Schematic representation of photofatigue experiment under continual irradiance: a) Mode A: 6 cycles of 5 blocks, b) Mode B: 30 cycles of 1 block, and c) Mode C: 1 UV cycle without decay phase of 1 block
Schematic representation of photofatigue experiment under continual irradiance: a) Mode A: 6 cycles of 5 blocks, b) Mode B: 30 cycles of 1 block, and c) Mode C: 1 UV cycle without decay phase of 1 block

Fig. 4.

Absorbance curves of photochromic prints and their characteristics of photochromic cycle measurements under continuous UV irradiance
Absorbance curves of photochromic prints and their characteristics of photochromic cycle measurements under continuous UV irradiance

Fig. 5.

Photo-fading behaviour vs. dose of photochromic dye with 100g.kg−1: a) Mode A: 6 cycles of 5 blocks, b) Mode B: 30 cycles of 1 block, c) Mode C: 1 UV cycle without decay phase of 1 block
Photo-fading behaviour vs. dose of photochromic dye with 100g.kg−1: a) Mode A: 6 cycles of 5 blocks, b) Mode B: 30 cycles of 1 block, c) Mode C: 1 UV cycle without decay phase of 1 block

Fig. 6.

Photo-fading behaviour vs. dose of photochromic dye with 200g.kg−1: a) Mode A: 6 cycles of 5 blocks, b) Mode A: 6 cycles of 5 blocks, c) Mode B: 30 cycles of 1 block, d) Mode C: 1 UV cycle without decay phase of 1 block
Photo-fading behaviour vs. dose of photochromic dye with 200g.kg−1: a) Mode A: 6 cycles of 5 blocks, b) Mode A: 6 cycles of 5 blocks, c) Mode B: 30 cycles of 1 block, d) Mode C: 1 UV cycle without decay phase of 1 block

Best-fit values for 100 g_kg−1 and 200 g_kg−1

Mode B: 30 cycles of 1 blockMode C: 1 UV cycle without decay phase of 1 block
100g.kg−1200g.kg−1 100g.kg−1200g.kg−1
K/S∞5.88010.50K/S∞6.00712.87
K/S04.8237.615K/S04.99010.97
k0.35640.3525k0.14980.3425
H1.9451.967H4.6272.024
R squared0.99200.9856R squared0.99490.9309
RMSE0.02080.0772RMSE0.01780.1152
AICc−223.7−145.1AICc−232.8−121.1
ΔK/S16.30 %26.01 %ΔK/S 9.48 %
DOI: https://doi.org/10.2478/ftee-2025-0009 | Journal eISSN: 2300-7354 | Journal ISSN: 1230-3666
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Language: English
Page range: 87 - 95
Published on: Oct 25, 2025
Published by: Łukasiewicz Research Network, Institute of Biopolymers and Chemical Fibres
In partnership with: Paradigm Publishing Services
Publication frequency: Volume open
Keywords:
photochromic dye,
UV irradiance cycles,
colour span values,
photo-fading,
photochromic prints
Related subjects:
Business and economics,
Business management,
Business informatics,
Process management,
Industrial chemistry,
Cellulose, paper and textiles,
Polymer science and technology,
Materials sciences,
Biomaterials and natural materials

© 2025 Utkarshsinh B Solanki, Martina Viková, Michal Vik, published by Łukasiewicz Research Network, Institute of Biopolymers and Chemical Fibres
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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