Influence of Titanium Dioxide Pigments on the Photodegradation of Paraloid Acrylic Resin

Panayotis Spathis · Evi Karagiannidou · Anastasia-Eleni Magoula-a

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Cultural Heritage Materials Analysis TiO2 Photocatalysis and Solar Cells Building materials and conservation

Abstract

Marble and stone used as building materials are susceptible to environmental damage. Polymers can be used as carriers of suitable pigments for the protection of the surface of a monument. The photodegradation of a series of Paraloid B72 films containing titanium dioxide (TiO2) pigments has been studied under UV irradiation. Two kinds of TiO2, anatase and anatase/rutile mixture, were used in different concentrations, 5, 15 and 30% w/w. The chemical and molecular changes induced by the irradiation treatment were followed by Fourier transform infrared spectroscopy, gel permeation chromatography, and solubility measurements. The presence of anatase pigment significantly improved the photostability of Paraloid films

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2001Photo-oxidative stability of paraloid acrylic protective polymers 1999Photodegradation of acrylic resins used in the conservation of stone 1997Group Report: How can we ensure the responsible and effective use of treatments (cleaning, consolidation, protection)?

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