Abstract
The process of aggregation of conjugates of dextran hydrophobically modified by sterically hindered phenols in an aqueous medium was studied by dynamic light scattering, transmission electron microscopy, atomic force microscopy, and fluorescent spectroscopy. It was found that, in solutions of dextran and related conjugates, individual molecules and their aggregates are present. The concentration, size, and shape of aggregates, as well as aggregation number, are determined by the degree of substitution of glycoside groups of dextran. It was shown that the critical concentration of conjugate aggregation decreases as the degree of substitution of dextran molecules increases.
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Original Russian Text © S.K. Filippov, A.S. Komolov, O.Yu. Sergeeva, A.S. Olifirenko, S.B. Lesnichin, E.A. Komarova, B.A. Loginov, N.S. Domnina, A.V. Lezov, 2009, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2009, Vol. 51, No. 2, pp. 209–217.
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Filippov, S.K., Komolov, A.S., Sergeeva, O.Y. et al. Aggregation of dextran hydrophobically modified by sterically hindered phenols. Polym. Sci. Ser. A 51, 161–167 (2009). https://doi.org/10.1134/S0965545X09020035
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DOI: https://doi.org/10.1134/S0965545X09020035
Keywords
- Atomic Force Microscopy
- Dextran
- Dynamic Light Scattering
- Dynamic Light Scattering
- Polymer Science Series