TitreReinforcement properties of 3-aminopropylmethyldiethoxysilane and N-(2-Aminoethyl)-3-aminopropylmethyldimethoxysilane on polyurethane ester foam
Type de publicationArticle de revue
Année de publication2012
AuteursEleonora Pellizzi, Agnès Lattuati-Derieux, Jean-Baptiste d'Espinose de Lacaillerie, Bertrand Lavédrine, Hervé Cheradame
JournalPolymer Degradation and Stability
Volume97
Numéro11
Pagination2340-2346
Mots clésAminoalkylalkoxysilanes; AMINOPROPYLMETHYLDIETHOXYSILANE; Foam; INFRARED-ANALYSIS; Interpenetrating polymer networks SEGMENTED POLYURETHANES; MASS DEACIDIFICATION; PHOTOCHEMICAL BEHAVIOR; PUR ester; Reinforcement; SEGMENTED POLYURETHANES
Résumé

Museum artifacts made of polyurethane foam are frequently affected by conservation issues mainly related to the loss of their mechanical properties. While effective polyurethane ether foam treatments already exist, no convenient consolidation treatment exists for polyurethane ester foams. The possibility of a reinforcement effect expected to prevent the mechanical properties loss has been evaluated. Two aminoalkylalcoxysilanes (AAAS), the 3-Aminopropylmethyldiethoxysilane and the N-(2-Aminoethyl)-3-aminopropylmethyldimethoxysilane, which gave promising results for consolidation of paper, have been tested on modern industrial flexible polyurethane ester foam samples. AAAS solutions at different concentrations have been applied, by immersion, on polyurethane ester foam samples. Mechanical properties have been studied by Compression Force Deflection Test, which shows that after AAAS treatment the resistance of the foam to compression improves. The color of the samples before and after consolidation has been monitored to assess the impact of the treatment on the visual aspect of the foam. The AAAS distribution in the thickness of the samples has been investigated by Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). Magic angle spinning nuclear magnetic resonance (MAS NMR) has been used to confirm AAAS polymerization and to evaluate its average polymer chain length. The promising results obtained suggest that AAAS could be an efficient solution for the consolidation of polyurethane ester foams.

URLhttps://hal.sorbonne-universite.fr/hal-01576719
DOI10.1016/j.polymdegradstab.2012.07.031
Champ de recherche: 
reinforcement properties of 3aminopropylmethyldiethoxysilane and n2aminoethyl3aminopropylmethyldimethoxysilane on polyurethane ester foam polymer degradation and stability pmuseum artifacts made of polyurethane foam are frequently affected by conservation issues mainly related to the loss of their mechanical properties while effective polyurethane ether foam treatments already exist no convenient consolidation treatment exists for polyurethane ester foams the possibility of a reinforcement effect expected to prevent the mechanical properties loss has been evaluated two aminoalkylalcoxysilanes aaas the 3aminopropylmethyldiethoxysilane and the n2aminoethyl3aminopropylmethyldimethoxysilane which gave promising results for consolidation of paper have been tested on modern industrial flexible polyurethane ester foam samples aaas solutions at different concentrations have been applied by immersion on polyurethane ester foam samples mechanical properties have been studied by compression force deflection test which shows that after aaas treatment the resistance of the foam to compression improves the color of the samples before and after consolidation has been monitored to assess the impact of the treatment on the visual aspect of the foam the aaas distribution in the thickness of the samples has been investigated by fourier transform infrared spectroscopy ftir and scanning electron microscopy sem magic angle spinning nuclear magnetic resonance mas nmr has been used to confirm aaas polymerization and to evaluate its average polymer chain length the promising results obtained suggest that aaas could be an efficient solution for the consolidation of polyurethane ester foamsp httpshalsorbonneuniversitefrhal01576719 97 101016jpolymdegradstab201207031 eleonora pellizzi agnes lattuatiderieux jeanbaptiste despinose de lacaillerie bertrand lavedrine herve cheradame aminoalkylalkoxysilanes aminopropylmethyldiethoxysilane foam infraredanalysis interpenetrating polymer networks segmented polyurethanes mass deacidification photochemical behavior pur ester reinforcement segmented polyurethanes
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