Article

Preparation and properties of chitosan/carbon nanotube nanocomposites using poly(styrene sulfonic acid)-modified CNTs

R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan Christian University, #200, Chung-Pei Road, Chungli, Taoyuan 32023, Taiwan
Carbohydrate Polymers DOI:10.1016/j.carbpol.2008.10.021 pp.232-238

ABSTRACT Poly(styrene sulfonic acid)-functionalized carbon nanotubes (CNT-PSSA), which was obtained with atom transfer radical polymerization (ATRP), was utilized in preparation of chitosan/CNT nanocomposites (CH/CNT-PSSA). Chemical linkages between chitosan and CNTs form in the nanocomposites through the reaction between the sulfuric acid groups of CNT-PSSA and the amino groups of chitosan, to warrant the homogenous dispersion of CNTs. The CH/CNT-PSSA nanocomposites were superior to the neat chitosan polymer in thermal and mechanical properties, water and solvent uptakes, bond water ratios, and electrical conductivity. The attractive property of the CH/CNT-PSSA nanocomposites also implied their application potentials for separation membranes and sensor electrodes.

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Keywords

amino groups
 
application potentials
 
atom transfer radical polymerization
 
ATRP
 
CH/CNT-PSSA nanocomposites
 
Chemical linkages
 
chitosan
 
chitosan/CNT nanocomposites
 
electrical conductivity
 
homogenous dispersion
 
nanocomposites
 
neat chitosan polymer
 
Poly(styrene sulfonic acid)-functionalized carbon nanotubes
 
sensor electrodes
 
solvent uptakes
 
sulfuric acid groups
 
thermal