Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2067/39530
Titolo: Revalorization of barley straw and husk as precursors for cellulose nanocrystals extraction and their effect on PVA_CH nanocomposites
Autori: Fortunati, Elena
Benincasa, P.
Balestra, Giorgio Mariano 
Luzi, F.
Mazzaglia, Angelo 
Del Buono, D.
Puglia, D.
Torre, L.
Data pubblicazione: 2016
Poly(vinyl alcohol) (PVA) blended with natural chitosan (CH) was selected as matrix for the production, by solvent casting in water, of nanocomposite films containing cellulose nanocrystals (CNC) extracted from barley residues, that were introduced in PVA_CH systems as reinforcement phases. Cellulose nanocrystals were successfully extracted from both barley straw and husk by applying two different approaches, a chemical alkaline and an enzymatic pre-treatment, followed by acidic hydrolysis. The results evidenced the major effectiveness of the enzymatic pre-treatment on the quality of obtained CNC; nevertheless, all the different typologies of nanocrystals were added to the polymers and the morphological, optical, mechanical response, thermal and migration characteristics were investigated, whereas antimicrobial assay were carried out to evaluate the bactericidal effect induced by chitosan presence. The results indicated that chitosan reduced the optical transparency and the mechanical response of PVA matrix, whereas its combination with CNC (especially when extracted by enzymatic treatment and added at a higher content) was able to modulate the optical properties, the mechanical and thermal responses. Moreover, inhibitions on fungal and bacterial development were detected for PVA_CH_CNC ternary systems, suggesting their protective function against microorganisms contamination.
URI: http://hdl.handle.net/2067/39530
ISSN: 0926-6690
DOI: 10.1016/j.indcrop.2016.07.047
È visualizzato nelle collezioni:A1. Articolo in rivista

File in questo documento:
File Descrizione DimensioniFormato Existing users please
1-s2.0-S0926669016304964-main.pdf5.35 MBAdobe PDF  Richiedi una copia
Fortunati et al 2016.pdf1.49 MBAdobe PDFVisualizza/apri
Visualizza tutti i metadati del documento


Last Week
Last month
controllato il 28-gen-2023

Page view(s)

Last Week
Last month
controllato il 4-feb-2023


controllato il 4-feb-2023

Google ScholarTM



Tutti i documenti nella community "Unitus Open Access" sono pubblicati ad accesso aperto.
Tutti i documenti nella community Prodotti della Ricerca" sono ad accesso riservato salvo diversa indicazione per alcuni documenti specifici