Trimethoxysilylpolymethacrylate as new material for stone conservation. Porosimetric and colorimetric investigations.
Aimed to obtain new materials for the conservation of stone substrates, we report here on the synthesis of a polymer which has been obtained by inducing polymerization on a methacrylate monomer functionalized by alchoxysilane groups. Two lithotypes, the Comiso calcarenite and Mistretta quartzite, stones largely used in artworks of north-eastern Sicily, were treated with the above polymer and its conserving efficacy evaluated in terms of porosimetric features, hydric properties and appearance. The collected data were compared to those provided, under the same experimental conditions, by an ethylmethacrylate/methylmethacrylate copolymer and an alkylalchoxysilane, products widely employed in the protection of stones. Experiments aimed to test the durability of the above polymer against UV artificial ageing are also reported.
Dipartimento di Chimica Inorganica, Chimica Analitica e Chimica Fisica, Salita Sperone 31, 98166 S. Agata, Messina. cardiano@chem.unime.it
Paola
P
Cardiano
Sergio
S
Sergi
Sandra
S
Lo Schiavo
Pasquale
P
Piraino
D003124:Colorimetry; D003247:Conservation of Natural Resources; D008689:Methacrylates / Q000737:chemistry*; D011108:Polymers; D016062:Porosity; D013472:Sunlight; D014867:Water
D008689:Methacrylates; D011108:Polymers; D014867:Water