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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 (Impact Factor: 4.07). 03/2009; 76(2):232-238. DOI: 10.1016/j.carbpol.2008.10.021

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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    • "were many experimental investigations about modifying CNTs by means of grafting CS on CNTs. Appropriate surface functionalization on CNTs are effective ways to promote the CS-CNT interactions [18] [39] [40]. However, the molecular structures of CS-functionalized CNT composites are still unknown, which limited the structure design and functionalization strategies of the nano-composites. "
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    • "Different types of material as micro and nanofillers, such as silica, hydroxyapatite, calcium phosphate, carbon nanotubes (CNTs) [1] and organo modified montmorillonite (OMMT), have been studied for reinforcing chitosan [11]. Of these, CNTs and OMMT have shown potential for reinforcing and enhancing the thermal stability of chitosan membranes [1] [2] [12] [13]. Nevertheless, it is well known that the synthesis and functionalization processes of CNTs are complicated and costly [14]. "
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