Abstract
Aqueous solutions of linear poly(2-ethyl-5,6-dihydrooxazine) and eight-armed star-shaped poly(2-isopropyl-2-oxazoline) have been studied by light scattering and turbidimetry. The influence of the duration of annealing at temperatures above the phase separation temperature on the behavior of the solutions has been analyzed. It has been shown that the characteristics of linear polymer solutions do not vary in the studied annealing time interval. The cloud point of star polymer solutions also does not depend on the annealing time. However, significant changes have been observed at the microscopic level, namely, irreversible aggregation due to the interaction of hydrophobic segments of poly(2-isopropyl-2-oxazoline) arms formed during annealing at a high temperature.
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This work was supported by the Ministry of Science and Higher Education of the Russian Federation, project no. 122012100166-4.
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Smirnova, A.V., Tenkovtsev, A.V. & Filippov, A.P. Effect of Annealing at High Temperatures on the Morphology of Aqueous Solutions of Star-Shaped Poly(2-Isopropyl-2-Oxazoline) and Linear Poly(2-Ethyl-5,6-Dihydrooxazine). Polym. Sci. Ser. C 64, 154–160 (2022). https://doi.org/10.1134/S1811238222700072
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DOI: https://doi.org/10.1134/S1811238222700072