2024-03-28T12:49:33Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/994402016-02-18T03:13:26Zcom_10261_56com_10261_3col_10261_309
00925njm 22002777a 4500
dc
Fortunati, Elena
author
Puglia, D.
author
Luzi, F.
author
Santulli, C.
author
Kenny, José María
author
Torre, L.
author
2013
PVA bio-nanocomposites reinforced with cellulose nanocrystals (CNC) extracted from commercial microcrystalline cellulose (MCC) and from two types of natural fibres, Phormium tenax and Flax of the Belinka variety, were produced by solvent casting in water. Morphological, thermal, mechanical and transparency properties were studied while the respective efficiency of the extraction process of CNC from the three sources was evaluated. The effect of CNC types and content on PVA properties and water absorption capacity were also evaluated. Natural fibres offered higher levels of extraction efficiency when compared with MCC hydrolysis yield. Thermal analysis proved that CNC promotes the crystallization of the PVA matrix, while improving its plastic response. It was also clarified that all PVA/CNC systems remain transparent due to CNC dispersion at the nanoscale, while being all saturated after the first 18-24 h of water absorption. © 2013 Elsevier Inc.
Carbohydrate Polymers 97: 825- 836 (2013)
http://hdl.handle.net/10261/99440
10.1016/j.carbpol.2013.03.075
Natural fibres
Cellulose nanocrystals
Bio-nanocomposites
Poly(vinyl alcohol) (PVA)
Mechanical properties
Water absorption capacity
Binary PVA bio-nanocomposites containing cellulose nanocrystals extracted from different natural sources: Part I