Carbon microspheres as network nodes in a novel biocompatible gel

J. E. St. Dennis; Qingkai Meng; Rubo Zheng; Noshir S. Pesika; Gary L. McPherson; Jibao He; Henry S. Ashbaugh; Vijay T. John; Matthew B. Dowling; Srinivasa R. Raghavan

doi:10.1039/C0SM01430C

Carbon microspheres as network nodes in a novel biocompatible gel†

J. E. St. Dennis,^a Qingkai Meng,^a Rubo Zheng,^a Noshir S. Pesika,^a Gary L. McPherson,^b Jibao He,^c Henry S. Ashbaugh,^a Vijay T. John,*^a Matthew B. Dowling^d and Srinivasa R. Raghavan^d

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* Corresponding authors

^a Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Louisiana, USA
E-mail: vj@tulane.edu

^b Department of Chemistry, Tulane University, New Orleans, Louisiana, USA

^c Coordinated Instrument Facility, Tulane University, New Orleans, Louisiana, USA

^d Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland, USA

Abstract

The gelation of hydrophobically modified chitosan solutions can be accomplished through the incorporation of uniform carbon microspheres. The carbon particles act as nodes in the gel network where hydrophobic alkyl groups, attached to the polysaccharide backbone, interact with multiple carbon microspheres to form a three-dimensional matrix. Rheological characterizations show significant increases in elastic moduli upon incorporation of the carbon microspheres.

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Carbon microspheres as network nodes in a novel biocompatible gel†

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