Hydrodynamic behavior of quaternized chitosan at acidic and neutral pH

N.P. Yevlampieva, A.S. Gubarev, M.Y. Gorshkova, B.M. Okrugin, E.I. Ryumtsev

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8 Citations (Scopus)


© 2015, Springer Science+Business Media Dordrecht.The study is devoted to estimation of the effect of quaternization on the molecular properties of polysaccharide chitosan. Solution properties of quaternized chitosan derivative, N-[(2-hydroxy-3-trimethylammonium)propyl]chitosan, have been studied in comparison with the initial chitosan in 0.33М СН3СООН + 0.2М CH3СООNa. The averaged quaternization degree of the modified samples was (90 ± 5) %. Hydrodynamics methods, translation isothermal diffusion and viscometry, and static/dynamic light scattering were applied for characterization of two homologues series of chitosans. The equilibrium chain rigidity value and Mark–Kuhn–Houwink relationships for intrinsic viscosity and diffusion coefficient have been received for the both polysaccharides at pH 3.54 and high ionic strength value. A change of thermodynamic conditions in the same solvent was detected for the modified chitosan in relation to initial analog. Even though the side substituents
Original languageEnglish
Number of pages9
JournalJournal of Polymer Research
Issue number9
Publication statusPublished - 2015


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