TY - JOUR
T1 - Percolation phenomena in polymer nanocomposites
AU - Mendoza, Moises Oviedo
AU - Valenzuela-Acosta, Edna M.
AU - Prokhorov, Evgen
AU - Luna-Barcenas, Gabriel
AU - Kumar-Krishnan, Siva
N1 - Publisher Copyright:
© 2016 VBRI Press.
PY - 2016
Y1 - 2016
N2 - In this work, we report the relationship between the electrical conductivity and nanoparticle effective surface area with functional properties of polymer-metal and polymer-clay nanocomposites. Conductivity of the nanocomposite strongly depends upon metal/clay nanoparticle size and concentration that ultimately dictate where the system percolates. Knowledge of percolation properties allows the design of functional nanocomposites for biomedical and sensors applications. Herein we report the successful production of three functional chitosan-metal/clay nanocomposites: a) chitosan-Ag films with antibacterial properties, b) chitosan-Au potentiometric sensor for detection of Cu++ and c) chitosan-nanoclay potentiometric sensor for detection of NO3-. For all these applications the best functional performance of nanocomposites has been observed when NPs concentration increases and approaches the percolation threshold. The obtained relationship between electrical percolation threshold and functional properties of polymer nanocomposites is of primary importance in the design of high-performance applications.
AB - In this work, we report the relationship between the electrical conductivity and nanoparticle effective surface area with functional properties of polymer-metal and polymer-clay nanocomposites. Conductivity of the nanocomposite strongly depends upon metal/clay nanoparticle size and concentration that ultimately dictate where the system percolates. Knowledge of percolation properties allows the design of functional nanocomposites for biomedical and sensors applications. Herein we report the successful production of three functional chitosan-metal/clay nanocomposites: a) chitosan-Ag films with antibacterial properties, b) chitosan-Au potentiometric sensor for detection of Cu++ and c) chitosan-nanoclay potentiometric sensor for detection of NO3-. For all these applications the best functional performance of nanocomposites has been observed when NPs concentration increases and approaches the percolation threshold. The obtained relationship between electrical percolation threshold and functional properties of polymer nanocomposites is of primary importance in the design of high-performance applications.
KW - Antibacterial properties
KW - Chitosan
KW - Nanocomposites
KW - Percolation
KW - Potentiometric sensor
UR - http://www.scopus.com/inward/record.url?scp=85011255951&partnerID=8YFLogxK
U2 - 10.5185/amlett.2016.6091
DO - 10.5185/amlett.2016.6091
M3 - Artículo
AN - SCOPUS:85011255951
SN - 0976-3961
VL - 7
SP - 353
EP - 359
JO - Advanced Materials Letters
JF - Advanced Materials Letters
IS - 5
ER -