Solid state 13C-NMR methodology for the cellulose composition studies of the shells of Prunus dulcis and their derived cellulosic materials
- Authors: Aurora Modica; Sergio Rosselli; Giorgia Catinella; Francesco Sottile; Carmelina Anna Catania; Giuseppe Cavallaro; Giuseppe Lazzara; Luigi Botta; Alberto Spinella; Maurizio Bruno
- Publication year: 2020
- Type: Articolo in rivista
- OA Link: http://hdl.handle.net/10447/424769
Lignocellulosic fibers and microcellulose have been obtained by simple alkaline treatment from softwood al- mond shells. In particular, the Prunus dulcis Miller (D.A.) Webb. was considered as a agro industrial waste largely available in southern Italy. The materials before and after purification have been characterized by 13C CPMAS NMR spectroscopy methodology. A proper data analysis provided the relative composition of lignin and holo- cellulose at each purification step and the results were compared with thermogravimetric analysis and FT-IR. To value the possibility of using this material in a circular economy framework, the fibrous cellulosic material was used to manufacture a handmade cardboard. The tensile performances on the prepared cardboard proved its suitability for packaging purposes as a sustainable material. These fibers along with the obtained microcellulose can represent a new use for the almond shells that are mainly used as firewood.