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Micellar structure of hydrophobically modified polysaccharides in aqueous solution

Polymer Journal volume 54, pages 403–412 (2022)Cite this article

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Abstract

This article reviews previous studies on micellar structures formed by hydrophobically modified polysaccharides in aqueous solutions by static and dynamic light scattering, small angle X-ray and neutron scattering, and fluorescence from pyrene solubilized in polymer solution. The experimental results are consistently explained by the full or loose flower necklace model for pullulan bearing octenyl groups and amylose bearing dodecyl groups and by the randomly branched polymer model, which is often called a “nanogel”, for pullulan bearing cholesteryl groups. We discuss the micellar structures of hydrophobically modified polysaccharides as well as of an amphiphilic alternating vinyl polymer bearing dodecyl groups in regard to the degree of substitution as well as the chemical structures of the hydrophobic moiety and backbone chain.

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Acknowledgements

We thank Dr. Daichi Ida at Kyoto University for correcting Eq. (24) of ref. [28], and Dr. Shin-ichi Yusa at the University of Hyogo and Dr. Akihito Hashidzume at Osaka University for valuable discussion. This work was supported in part by JSPS KAKENHI Grant No. 18H02020. The synchrotron radiation experiments were performed at the BL40B2 of SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal Nos. 2019B1375, 2016B1088, 2015B1100, 2015A1179, 2014B1715, and 2014B1087).

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  1. Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan

    Takahiro Sato, Jia Yang & Ken Terao

  2. College of Science, Shenyang University of Chemical Technology, 11th Street, Shenyang Economic and Technological Development Zone, Shenyang, 110142, China

    Jia Yang

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  1. Takahiro Sato
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Correspondence to Takahiro Sato.

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Sato, T., Yang, J. & Terao, K. Micellar structure of hydrophobically modified polysaccharides in aqueous solution. Polym J 54, 403–412 (2022). https://doi.org/10.1038/s41428-021-00561-4

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