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.
Cardiano
Paola
P
Dipartimento di Chimica Inorganica, Chimica Analitica e Chimica Fisica, Salita Sperone 31, 98166 S. Agata, Messina. cardiano@chem.unime.it
Sergi
Sergio
S
Lo Schiavo
Sandra
S
Piraino
Pasquale
P
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