TY - JOUR
T1 - Ternary PVA nanocomposites containing cellulose nanocrystals from different sources and silver particles
T2 - Part II
AU - Fortunati, E.
AU - Luzi, F.
AU - Puglia, D.
AU - Terenzi, A.
AU - Vercellino, M.
AU - Visai, L.
AU - Santulli, C.
AU - Torre, L.
AU - Kenny, J. M.
PY - 2013
Y1 - 2013
N2 - Cellulose nanocrystals (CNC) extracted from three different sources, namely flax, phormium, and commercial microcrystalline cellulose (MCC) have been used in a polyvinyl alcohol (PVA) matrix to produce anti-bacterial films using two different amounts of silver nanoparticles (0.1 wt% and 0.5 wt%). In general, CNC confer an effect of reinforcement to PVA film, the best values of stiffness being offered by composites produced using phormium fibres, whilst for strength those produced using flax are slightly superior. This was obtained without inducing any particular modification in transition temperatures and in the thermal degradation patterns. As regards antibacterial properties, systems with CNC from flax proved slightly better than those with CNC from phormium and substantially better than those including commercial MCC. Dynamic mechanical thermal analysis (DMTA) has only been performed on the ternary composite containing 0.1 wt% Ag, which yielded higher values of Young's modulus, and as a whole confirmed the above results.
AB - Cellulose nanocrystals (CNC) extracted from three different sources, namely flax, phormium, and commercial microcrystalline cellulose (MCC) have been used in a polyvinyl alcohol (PVA) matrix to produce anti-bacterial films using two different amounts of silver nanoparticles (0.1 wt% and 0.5 wt%). In general, CNC confer an effect of reinforcement to PVA film, the best values of stiffness being offered by composites produced using phormium fibres, whilst for strength those produced using flax are slightly superior. This was obtained without inducing any particular modification in transition temperatures and in the thermal degradation patterns. As regards antibacterial properties, systems with CNC from flax proved slightly better than those with CNC from phormium and substantially better than those including commercial MCC. Dynamic mechanical thermal analysis (DMTA) has only been performed on the ternary composite containing 0.1 wt% Ag, which yielded higher values of Young's modulus, and as a whole confirmed the above results.
KW - Bio-nanocomposites
KW - Cellulose nanocrystal
KW - Natural fibres
KW - Poly(vinyl alcohol) (PVA)
KW - Silver nanoparticles
KW - Water absorption capacity
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U2 - 10.1016/j.carbpol.2013.05.015
DO - 10.1016/j.carbpol.2013.05.015
M3 - Article
C2 - 23911522
AN - SCOPUS:84885618792
VL - 97
SP - 837
EP - 848
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
SN - 0144-8617
IS - 2
ER -