Self-assembly and physicochemical and rheological properties of a polysaccharide-surfactant system formed from the cationic biopolymer chitosan and nonionic sorbitan esters

Langmuir : the ACS Journal of Surfaces and Colloids
Justin GrantC Allen

Abstract

The natural cationic polysaccharide chitosan was mixed with the nonionic surfactants sorbitan monolaurate, sorbitan monooleate, or sorbitan triooleate to produce a biopolymer-surfactant system with unique properties. The mixtures of chitosan and surfactant formed emulsion-like solutions and/or creams. The known properties of the components were considered (i.e., hydrophile-lipophile balance, molecular weight, structure, and density), and various physicochemical and rheological properties of the mixtures were measured. Specifically, the critical micelle concentration of the sorbitan esters in a chitosan solution was measured using both surface tension and fluorescence-based methods. The concentration-dependent morphologies of the aggregates within the chitosan-surfactant solutions were evaluated by optical microscopy and dynamic light scattering. A schematic depicting the possible molecular arrangement of chitosan and surfactant within the various formulations was produced from consideration of the experimental findings. The degree of interaction between chitosan and the individual surfactants was assessed by FTIR analysis. The rheological properties of the chitosan-surfactant emulsions were also investigated and found to be rel...Continue Reading

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Citations

Jun 8, 2010·The European Physical Journal. E, Soft Matter·L PayetF Agnely
Jul 31, 2013·Journal of Colloid and Interface Science·Pankaj BharmoriaArvind Kumar
Apr 9, 2008·International Journal of Biological Macromolecules·Liuhua Chen, Liu Tianqing
Aug 23, 2008·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Jing WangPing Chi
Apr 3, 2013·Carbohydrate Polymers·Carolina Siqueira Franco Picone, Rosiane Lopes Cunha
Jan 26, 2012·Optics Express·P H D FerreiraC R Mendonca
Apr 14, 2015·Advances in Colloid and Interface Science·Leonardo Chiappisi, Michael Gradzielski
Sep 9, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Fabrice BrunelThierry Delair
Jul 4, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Fabrice BrunelThierry Delair
Sep 20, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Xianghong Peng, Lina Zhang
Jul 17, 2007·Biomacromolecules·Paweł WydroKatarzyna Hac-Wydro

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