Authors: Claudia Conti Jana Striova Irene Aliatis Chiara Colombo Marinella Greco Elena Possenti Marco Realini Luigi Brambilla Giuseppe Zerbi
Publish Date: 2012/12/07
Volume: 405, Issue: 5, Pages: 1733-1741
Abstract
This study aims to evaluate the relevance of portable Raman and portable midFourier transform infrared FTIR reflectance instruments in monitoring the synthetic treatments applied on plaster substrates a crucial issue in a conservation work Some polymeric consolidants and protectives have a relatively short life owing to their degradation and after some years the surface should be retreated It follows that any information about the presence and composition of the products applied their chemical transformations and their distribution on the surfaces is essential For these purposes conservation scientists should seek and test new in situ methods and this is of utmost importance especially in the case of buildings considering their large dimensions and consequent extensive mapping The effectiveness of portable Raman and portable midFTIR reflectance instruments has been compared by analysing a set of laboratory specimens prepared and treated with variable amounts of products belonging to three classes of polymers the spectroscopic investigation highlighted for the first time the limits and the advantages of portable Raman and portable midFTIR reflectance instruments in the detection of small amounts of products commonly employed for the conservation of plasters
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