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Self-organization of thermosensitive star-shaped poly(2-isopropyl-2-oxazolines) influenced by arm number and generation of carbosilane dendrimer core in aqueous solutions

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Abstract

Self-organization of diphilic star-shaped poly(2-isopropyl-2-oxazoline) with carbosilane dendrimer core was investigated in aqueous solutions on heating by light scattering and turbidimetry methods. The temperature dependences of light scattering intensity, optical transmittance, hydrodynamic radii of each type of particles and their contribution to integral light scattering intensity were obtained. The phase separation temperatures were determined at concentration ranging from 0.00023 to 0.0135 g cm−3. It is shown that these temperatures are higher than for the eight-arm analog because of the different degree of hydrophobic core shielding by hydrophilic arms.

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Funding

This work was supported by the State Program for Support of Leading Scientific Schools (grant no. 14.W03.31.0022). All carbosilane dendrimers were synthesized as part of work supported by the Russian Foundation for Basic Research (RFBR) (project No 18-29-04037 мк).

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Authors and Affiliations

  1. Institute of Macromolecular Compounds of Russian Academy of Sciences, Bolshoy pr., 31, St. Petersburg, 199004, Russia

    Serafim Rodchenko, Alina Amirova, Mikhail Kurlykin, Andrey Tenkovtsev & Alexander Filippov

  2. Enikolopov Institute of Synthetic Polymeric Materials of Russian Academy of Sciences, Profsoyuznaya St. 70, Moscow, 117393, Russia

    Sergey Milenin

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  1. Serafim Rodchenko
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Correspondence to Serafim Rodchenko.

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Rodchenko, S., Amirova, A., Milenin, S. et al. Self-organization of thermosensitive star-shaped poly(2-isopropyl-2-oxazolines) influenced by arm number and generation of carbosilane dendrimer core in aqueous solutions. Colloid Polym Sci 298, 355–363 (2020). https://doi.org/10.1007/s00396-020-04619-2

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  • DOI: https://doi.org/10.1007/s00396-020-04619-2

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