Identification of dyes is of great importance for the protection of textiles artefacts, as well as for further understanding the manufacturing process of ancient dyes. Moreover, the evaluation of degradation status can help conservators to reconstruct the original appearance of historical textile objects and predict the stability of their colors.
Natural organic dyes on textile are usually detected through molecular analytical methods. In particular, liquid chromatography (LC) and gas chromatography (GC) have been widely used in the dye analysis with high accuracy. However, they are invasive methods, as they are based on the analysis of organic extracts.
Recently, non-invasive methods based on spectroscopy technology, such as reflectance spectroscopy and fluorescence spectroscopy, received great attention. Reflectance spectroscopy is used for the characterization of paint films and pigments. In addition, Kubelka-Munk’s theoretical reflectivity of diffuse medium provides chances to quantitatively analyze mixtures of pigments by reflectance spectroscopy. When the scattering coefficient is independent of the wavelength, the typical absorption spectrum measured by the reflection can be used as a substitute indicator for the actual absorption spectra.
News & Events
Submissions are open for the Special Issue: Functional Nanomaterials for a Better Life [Materials, IF=3.057]
Please see the attachment.
Deadline for manuscript submissions: 31 December 2021
The Guest Editors
A new agreement for cooperation between ICMATE and Laval University, Laboratory of Biomaterials and Bioengineering, Québec city, Canada is now active.
THIS WEEK'S HIGHLIGHTS
The increasing demand for alternatives to fossil fuels lead scientists to search for new materials to be used as energy vectors. Nowadays, it is generally accepted that hydrogen is the best solution to this issue. One of the reasons why hydrogen is not yet commonly employed in everyday life lies in the lack of a safe, practical and effective method for its storage. A possible solution that meets the above requirements is given by intermetallic hydrides, which can be charged with hydrogen at high-pressure to form stable hydrides, then releasing hydrogen by heating the host intermetallic.
Studies of the physico-chemical properties of the solid-liquid interfaces at high temperatures, in particular wetting and reactivity, and of the related mechanisms.
- Study of environmental phenomena through radiochemical approach
- Studies of natural and artificial radionuclides mobility in the environment for their potential danger for man health or environment
- Development of radioanalytical methodologies and monitoring technologies