NMR spectroscopy applied to the Cultural Heritage: a preliminary study on ancient wood characterisation |
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Authors: | Email author" target="_blank">S?VielEmail author D?Capitani N?Proietti F?Ziarelli AL?Segre |
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Institution: | (1) CNR, Istituto di Metodologie Chimiche, Via Salaria km 29.3, C.P.10, 00016 Monterotondo Staz. (Roma), Italy;(2) UMR 6516 Synthèse, Chiralité et Catalyse, Université dAix–Marseille III, Av. Escadrille Normandie Niémen, 13397 Marseille, France;(3) CAMPEC, Via G. Porzio, Centro Direzionale, Isola F4, Napoli, Italy;(4) Centre Régional de RMN, case 511, Av. Escadrille Normandie Niémen, 13397 Marseille, France |
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Abstract: | High and low resolution solid state NMR methods have been applied to characterise a few samples of ancient wood. In an ancient larch wood sample, by applying 1H low resolution NMR methods as a function of the temperature, the average pore size and its distribution have been determined. In addition, high resolution NMR techniques have allowed addressing of the question of the proximity of water pools to cellulose and lignin. In particular, a model can be hypothesized in which water pools are surrounded by thin layers of amorphous cellulose and/or lignin while the crystalline domains of cellulose surround the layers of amorphous cellulose. Preliminary results obtained using a fully non invasive and portable NMR unilateral relaxometer, the Eureka-Mouse10 (EM10), are reported. This instrumentation is shown to be perfectly suitable for characterizing degradation in ancient wood samples. PACS 76.60 k |
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