Temperature-responsive star-shaped poly(2-ethyl-2-oxazoline) and poly(2-isopropyl-2-oxazoline) with central thiacalix[4]arene fragments^ structure and properties in solutions

A. A. Lezov, A. S. Gubarev, A. N. Podsevalnikova, A. S. Senchukova, E. V. Lebedeva, M. M. Dudkina, A. V. Tenkovtsev, T. N. Nekrasova, L. N. Andreeva, R. Yu. Smyslov, Yu. E. Gorshkova, G. P. Kopitsa, A. Rǎdulescu, V. Pipich, N. V. Tsvetkov

Research output

1 Citation (Scopus)

Abstract

Temperature-responsive star-shaped poly(2-ethyl-2-oxazoline) (star-PETOX) and poly(2-isopropyl-2-oxazoline) (star-PIPOX) with arms grafted to the lower rim of thiacalix[4]arene were studied in solutions by viscometry, sedimentation velocity, light scattering, and small-angle neutron scattering. The experiments were carried out in water and tetrahydrofuran solutions. It was revealed that in tetrahydrofuran, the studied polymers were present only as individual molecules, while in aqueous solutions, in addition to individual molecules, large polymer aggregates were found. Molecular characteristics of the star-PETOX and star-PIPOX samples were estimated; their behavior in tetrahydrofuran and water was studied over a wide temperature range. It was established that a cloud point of the aqueous solution of star-PETOX (67 °C) is higher than that of a solution of star-PIPOX (35 °C). Comparison of the data obtained by dynamic light scattering and small-angle neutron scattering turned out to be fruitful in revealing all the structural levels of the organization of star-PETOX and star-PIPOX in aqueous solutions. They include the level of the individual macromolecules and the level of supramolecular organization with a star-like architecture. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)285-296
JournalColloid and Polymer Science
Volume297
Issue number2
Early online date10 Jan 2019
DOIs
Publication statusPublished - Feb 2019

Fingerprint

Stars
fragments
stars
tetrahydrofuran
Temperature
temperature
Neutron scattering
aqueous solutions
Polymers
neutron scattering
light scattering
viscometry
Molecules
poly(2-ethyl-2-oxazoline)
thiacalix(4)arene
Water
Viscosity measurement
polymers
Dynamic light scattering
rims

Scopus subject areas

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

Cite this

Lezov, A. A. ; Gubarev, A. S. ; Podsevalnikova, A. N. ; Senchukova, A. S. ; Lebedeva, E. V. ; Dudkina, M. M. ; Tenkovtsev, A. V. ; Nekrasova, T. N. ; Andreeva, L. N. ; Smyslov, R. Yu. ; Gorshkova, Yu. E. ; Kopitsa, G. P. ; Rǎdulescu, A. ; Pipich, V. ; Tsvetkov, N. V. / Temperature-responsive star-shaped poly(2-ethyl-2-oxazoline) and poly(2-isopropyl-2-oxazoline) with central thiacalix[4]arene fragments^ structure and properties in solutions. In: Colloid and Polymer Science. 2019 ; Vol. 297, No. 2. pp. 285-296.
@article{8d1bc39b71a44ff3a4b15e13c6386a92,
title = "Temperature-responsive star-shaped poly(2-ethyl-2-oxazoline) and poly(2-isopropyl-2-oxazoline) with central thiacalix[4]arene fragments^ structure and properties in solutions",
abstract = "Temperature-responsive star-shaped poly(2-ethyl-2-oxazoline) (star-PETOX) and poly(2-isopropyl-2-oxazoline) (star-PIPOX) with arms grafted to the lower rim of thiacalix[4]arene were studied in solutions by viscometry, sedimentation velocity, light scattering, and small-angle neutron scattering. The experiments were carried out in water and tetrahydrofuran solutions. It was revealed that in tetrahydrofuran, the studied polymers were present only as individual molecules, while in aqueous solutions, in addition to individual molecules, large polymer aggregates were found. Molecular characteristics of the star-PETOX and star-PIPOX samples were estimated; their behavior in tetrahydrofuran and water was studied over a wide temperature range. It was established that a cloud point of the aqueous solution of star-PETOX (67 °C) is higher than that of a solution of star-PIPOX (35 °C). Comparison of the data obtained by dynamic light scattering and small-angle neutron scattering turned out to be fruitful in revealing all the structural levels of the organization of star-PETOX and star-PIPOX in aqueous solutions. They include the level of the individual macromolecules and the level of supramolecular organization with a star-like architecture. [Figure not available: see fulltext.]",
keywords = "DLS AUC, Molecular properties, SANS, Star-shaped polyoxazolines, Thiacalix[4]arene",
author = "Lezov, {A. A.} and Gubarev, {A. S.} and Podsevalnikova, {A. N.} and Senchukova, {A. S.} and Lebedeva, {E. V.} and Dudkina, {M. M.} and Tenkovtsev, {A. V.} and Nekrasova, {T. N.} and Andreeva, {L. N.} and Smyslov, {R. Yu.} and Gorshkova, {Yu. E.} and Kopitsa, {G. P.} and A. Rǎdulescu and V. Pipich and Tsvetkov, {N. V.}",
year = "2019",
month = "2",
doi = "10.1007/s00396-018-4458-9",
language = "English",
volume = "297",
pages = "285--296",
journal = "Colloid and Polymer Science",
issn = "0303-402X",
publisher = "Springer",
number = "2",

}

Temperature-responsive star-shaped poly(2-ethyl-2-oxazoline) and poly(2-isopropyl-2-oxazoline) with central thiacalix[4]arene fragments^ structure and properties in solutions. / Lezov, A. A.; Gubarev, A. S.; Podsevalnikova, A. N.; Senchukova, A. S.; Lebedeva, E. V.; Dudkina, M. M.; Tenkovtsev, A. V.; Nekrasova, T. N.; Andreeva, L. N.; Smyslov, R. Yu.; Gorshkova, Yu. E.; Kopitsa, G. P.; Rǎdulescu, A.; Pipich, V.; Tsvetkov, N. V.

In: Colloid and Polymer Science, Vol. 297, No. 2, 02.2019, p. 285-296.

Research output

TY - JOUR

T1 - Temperature-responsive star-shaped poly(2-ethyl-2-oxazoline) and poly(2-isopropyl-2-oxazoline) with central thiacalix[4]arene fragments^ structure and properties in solutions

AU - Lezov, A. A.

AU - Gubarev, A. S.

AU - Podsevalnikova, A. N.

AU - Senchukova, A. S.

AU - Lebedeva, E. V.

AU - Dudkina, M. M.

AU - Tenkovtsev, A. V.

AU - Nekrasova, T. N.

AU - Andreeva, L. N.

AU - Smyslov, R. Yu.

AU - Gorshkova, Yu. E.

AU - Kopitsa, G. P.

AU - Rǎdulescu, A.

AU - Pipich, V.

AU - Tsvetkov, N. V.

PY - 2019/2

Y1 - 2019/2

N2 - Temperature-responsive star-shaped poly(2-ethyl-2-oxazoline) (star-PETOX) and poly(2-isopropyl-2-oxazoline) (star-PIPOX) with arms grafted to the lower rim of thiacalix[4]arene were studied in solutions by viscometry, sedimentation velocity, light scattering, and small-angle neutron scattering. The experiments were carried out in water and tetrahydrofuran solutions. It was revealed that in tetrahydrofuran, the studied polymers were present only as individual molecules, while in aqueous solutions, in addition to individual molecules, large polymer aggregates were found. Molecular characteristics of the star-PETOX and star-PIPOX samples were estimated; their behavior in tetrahydrofuran and water was studied over a wide temperature range. It was established that a cloud point of the aqueous solution of star-PETOX (67 °C) is higher than that of a solution of star-PIPOX (35 °C). Comparison of the data obtained by dynamic light scattering and small-angle neutron scattering turned out to be fruitful in revealing all the structural levels of the organization of star-PETOX and star-PIPOX in aqueous solutions. They include the level of the individual macromolecules and the level of supramolecular organization with a star-like architecture. [Figure not available: see fulltext.]

AB - Temperature-responsive star-shaped poly(2-ethyl-2-oxazoline) (star-PETOX) and poly(2-isopropyl-2-oxazoline) (star-PIPOX) with arms grafted to the lower rim of thiacalix[4]arene were studied in solutions by viscometry, sedimentation velocity, light scattering, and small-angle neutron scattering. The experiments were carried out in water and tetrahydrofuran solutions. It was revealed that in tetrahydrofuran, the studied polymers were present only as individual molecules, while in aqueous solutions, in addition to individual molecules, large polymer aggregates were found. Molecular characteristics of the star-PETOX and star-PIPOX samples were estimated; their behavior in tetrahydrofuran and water was studied over a wide temperature range. It was established that a cloud point of the aqueous solution of star-PETOX (67 °C) is higher than that of a solution of star-PIPOX (35 °C). Comparison of the data obtained by dynamic light scattering and small-angle neutron scattering turned out to be fruitful in revealing all the structural levels of the organization of star-PETOX and star-PIPOX in aqueous solutions. They include the level of the individual macromolecules and the level of supramolecular organization with a star-like architecture. [Figure not available: see fulltext.]

KW - DLS AUC

KW - Molecular properties

KW - SANS

KW - Star-shaped polyoxazolines

KW - Thiacalix[4]arene

UR - http://www.scopus.com/inward/record.url?scp=85059843345&partnerID=8YFLogxK

U2 - 10.1007/s00396-018-4458-9

DO - 10.1007/s00396-018-4458-9

M3 - Article

AN - SCOPUS:85059843345

VL - 297

SP - 285

EP - 296

JO - Colloid and Polymer Science

JF - Colloid and Polymer Science

SN - 0303-402X

IS - 2

ER -