New cellulosic titanium dioxide nanocomposite as a protective coating for preserving paper-art-works

Highly transparent poly(2-ethyl-2-oxazoline)-TiO2nanocomposite coatings for the conservation of matte painted artworks

“…As an example the consolidation of wall painting and the de-acidification of the paper with calcium and magnesium hydroxides nanoparticles have been reported [4][5][6][7][8] . Recently, also titanium dioxide nanoparticles played an important role in the cleaning of stones, as self-cleaning coating for its well-known photocatalytic [9][10][11][12][13] and anti-bacterial activity 14 . On the other hand, TiO 2 is a semiconductor oxide (E g ≈ 3 eV), transparent in the visible range, with a high refractive index (2.49 at 589 nm for anatase phase) 15 , so it meets several requirements for polymers, such as UV absorption 21 , diffusion 22 , and refractive index 23 can be improved and modulated by the introduction of TiO 2 nanoparticles in the organic matrix, preserving the material transparency, the absence of colour, lightness and flexibility.…”

Innovative Nanomaterials: Principles, Availability and Scopes

“…Nanocomposites exhibit at least one component with nanometric size or nanostructuration, and show better performances than traditional filled polymeric matrices in terms of mechanical properties, chemical resistance, protection against UV radiation, etc. These materials can be used for conservation purposes, for instance polymer-silica nanoparticles composite films show increased hydrophobicity with respect to poly(methyl methacrylate) coatings for the water protection of stone-based monuments (Manoudis et al 2007), and a Klucel-TiO 2 nanocomposite has been proposed for the protection of paper from UV radiation and from the formation of biofilms (Afsharpour et al 2011).…”

Antifungal Paper Based on a Polyborneolacrylate Coating

“…Chemical microbicides can be added to paper by directly coating or incorporation into cellulose pulp during the production process. Various types of antifungal agents such as azole antifungals [ 8 ], phenol derivatives [ 9 ], silver and zinc oxide composite [ 10 , 11 ], titanium dioxide [ 12 ], quaternary ammonium compounds [ 13 ], calcium propionate and parabens [ 1 , 3 , 14 ] have been reported to produce excellent antifungal activity. However, all existent antifungal methods have strengths and weaknesses: most of the methods mentioned above have potential toxicity to humans and the environment, which make them unsatisfactory for long-term usage [ 15 , 16 , 17 , 18 ].…”