ABSTRACT
ABSTRACT: This paper reports a study of two organic-inorganic hybrid materials used as consolidants. Both formulations were synthesized from an inorganic precursor, i.e. tetraethoxysilane, added in different percentages (up to 60% per hundred resin) to a polysiloxane epoxy formulation (TEGO RC 1411) and to a cycloaliphatic epoxy resin (3,4-epoxyciclohexylmethyl-3,4-epoxyciclohexane carboxylate), cured in the presence of ytterbium as acid catalyst. The film properties and the formation of silica clusters were investigated. The products were applied on a plaster and their compatibility and effectiveness were verified. Lately sustainability and green chemistry are important issues in the field of conservation; for these reason no solvents, amines and nanoparticles were used in this study.
