Note: Light ageing with simultaneous colorimetry via fibre optics reflection spectrometry

Area of Science:

• Analytical Chemistry
• Materials Science
• Conservation Science

Background:

• Assessing the light fastness of colorants is crucial for material preservation, especially for valuable heritage objects.
• Standard light aging methods can be destructive and time-consuming, limiting their application on unique artifacts.
• Developing non-damaging, efficient techniques is essential for conservation science and materials research.

Purpose of the Study:

• To present the design and characteristics of a novel micro-fadeometer instrument.
• To demonstrate the utility of this instrument for non-destructive evaluation of colorant light fastness.
• To showcase its application in developing preservation strategies for heritage materials.

Main Methods:

• Design and construction of a micro-fadeometer for light fastness evaluation.
• Utilizing the instrument for real-time measurement of light-induced changes in colorants.
• Applying the technique to various materials, including those relevant to heritage objects.
• Performing automated high-throughput screening of materials.

Main Results:

• The micro-fadeometer enables non-(micro-) destructive assessment of light fastness.
• The instrument offers real-time kinetic studies of colorant degradation.
• Demonstrated flexibility in evaluating museum lighting and oxygen-free display conditions.
• Highlighted benefits include low operating cost and automated screening capabilities.

Conclusions:

• The micro-fadeometer is a versatile tool for evaluating colorant light fastness on diverse materials.
• It provides a non-damaging alternative to traditional methods, crucial for heritage preservation.
• The technology supports the development of optimized display strategies to enhance the longevity of valuable objects.