A multitechnique approach to assess the effect of ball milling on cellulose (Articolo in rivista)

Type
Label
  • A multitechnique approach to assess the effect of ball milling on cellulose (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Alternative label
  • Avolio, R. , Bonadies, I. , Capitani, D. , Errico, M.E. , Gentile, G. , Avella, M. (2012)
    A multitechnique approach to assess the effect of ball milling on cellulose
    in Carbohydrate polymers
    (literal)
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  • Avolio, R. , Bonadies, I. , Capitani, D. , Errico, M.E. , Gentile, G. , Avella, M. (literal)
Pagina inizio
  • 265 (literal)
Pagina fine
  • 273 (literal)
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  • 87 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Italian National Research Council, Magnetic Resonance Laboratory Annalaura Segre,Rome, Italy. ICTP CNR POZZUOLI (literal)
Titolo
  • A multitechnique approach to assess the effect of ball milling on cellulose (literal)
Abstract
  • This paper presents a detailed analysis of effect induced by a dry ball milling process on cellulose structure, morphology and properties. The partial amorphization of cellulose was qualitatively estimated by ATR-FTIR analysis. Through WAXD analysis the crystallinity index and the mean size of the cellulose crystallite domains were calculated, both these parameters showing a progressive decrease as a function of the milling time. In particular, crystallinity index decreased from 0.53 to 0.15 after 60 min ball milling, whereas the mean size of the cellulose crystallite domains showed a reduction from the original value of about 4.0 nm up to about 3.4 nm after 30 min. These quantitative results were confirmed by 13C CP-MAS NMR analysis and measurements of the proton spin-lattice relaxation time in the rotating frame (T1Á1H). Moreover, the increasing of the amount of water absorbed by cellulose samples (from 7.3 wt% for untreated cellulose up to 11.6 wt% for the cellulose sample ball milled for 60 min) and the reduction of the thermal stability were evaluated by TGA. Finally, SEM analysis revealed that the original fibrous structure almost disappeared and was modified to a quasi-circular shape. © 2011 Elsevier Ltd. All Rights Reserved. (literal)
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