title: In situ and frontal polymerization for the consolidation of porous stones: a unilateral NMR and magnetic resonance imaging study.
abstract: Consolidation treatment of porous materials was performed by in situ and frontal polymerization of acrylic monomers inside a porous stone. To study the penetration of the polymer inside the stone and its consolidating effects we used water as a contrast agent, detecting its penetration using unilateral NMR and magnetic resonance imaging. All data obtained on differently treated stones were compared with corresponding ones obtained analyzing both untreated stones and stones simply painted with a well-known polymeric protective agent. In situ polymerization of acrylic monomers inside porous stones has been demonstrated to be an extremely powerful consolidating method, whereas thermally initiated frontal polymerization seems less efficient. In both cases the optimal choice of monomers is still open and requires further study. Our data indicate that unilateral NMR represents an inexpensive and simple technique for the non-invasive observation of the water uptake and of the effect of consolidation procedures in porous materials.
authors.affiliation: Institute of Chemical Methodologies, CNR, Research Area of Rome, 00016 Monterotondo Stazione, Rome, Italy.
authors.forename: Noemi
authors.initials: N
authors.lastname: Proietti
authors.forename: Donatella
authors.initials: D
authors.lastname: Capitani
authors.forename: Sara
authors.initials: S
authors.lastname: Cozzolino
authors.forename: Massimiliano
authors.initials: M
authors.lastname: Valentini
authors.forename: Enrico
authors.initials: E
authors.lastname: Pedemonte
authors.forename: Elisabetta
authors.initials: E
authors.lastname: Princi
authors.forename: Silvia
authors.initials: S
authors.lastname: Vicini
authors.forename: Anna Laura
authors.initials: AL
authors.lastname: Segre
mesh_terms: D000179:Acrylates / Q000737:chemistry*; D003252:Construction Materials; D008279:Magnetic Resonance Imaging; D009682:Magnetic Resonance Spectroscopy; D011108:Polymers / Q000737:chemistry*; D016062:Porosity
chemical_list: D000179:Acrylates; D011108:Polymers