Preparation and properties of chitosan/carbon nanotube nanocomposites using poly(styrene sulfonic acid)-modified CNTs
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.
Article: A biocompatible and load bearing composite of multiwalled carbon nanotubes chitosan and natural hydroxyapatite derived from the chicken bones wasted in the slaughter houses[show abstract] [hide abstract]
ABSTRACT: A large amount of chicken bone is produced as waste from the protein industry all over the world and discarding it has become one of the important environmental concerns in recent time. The value addition to the waste bones including the isolation of hydroxyapatite (HAP) will reduce the dumping of these wastes on to the environment. HAP has been isolated from the waste chicken bones and the composite of functionalized multiwalled carbon nanotube (f-MWCNT)-chitosan-HAP has been prepared to improve the mechanical and thermal properties of HAP by the incorporation of chitosan and multiwalled carbon nanotube (MWCNT). MWCNT add mechanical and tensile strength whereas chitosan add binding and biocompatibility to the composite.International Journal of Pharmacy and Pharmaceutical Sciences 08/2012; 4:716-720.