volume 34 issue 50 pages 15470-15482

Effect of Composition and Molecular Structure of Poly(l-lactic acid)/Poly(ethylene oxide) Block Copolymers on Micellar Morphology in Aqueous Solution

Alevtina I Kulebyakina 2
Dmitry R Streltsov 1, 2
A. V. Bakirov 1, 2
S. N. Chvalun 1, 2
Publication typeJournal Article
Publication date2018-11-15
scimago Q1
wos Q2
SJR0.763
CiteScore6.0
Impact factor3.9
ISSN07437463, 15205827
Spectroscopy
Electrochemistry
Condensed Matter Physics
General Materials Science
Surfaces and Interfaces
Abstract
The effect of the hydrophobic block length in diblock (PLLA x- b-PEO113, x = 64, 166, 418) and triblock (PLLA y- b-PEO91- b-PLLA y, y = 30, 52, 120) copolymers of l-lactic acid and ethylene oxide on the structure of micelles prepared by dialysis was studied by wide- and small-angle X-ray scattering in dilute aqueous solution, dynamic light scattering, transmission electron microscopy, atomic force microscopy, and force spectroscopy. It was found that the size of the crystalline PLLA core is weakly dependent on the PLLA block length. In addition to individual micelles, a number of their micellar clusters were detected with characteristic distance between adjacent micelle cores decreasing with an increase in PLLA block length. This effect was explained by the change in the conformation of PEO chains forming the micellar corona because of their overcrowding. Force spectroscopy experiments also reveal a more stretched conformation of the PEO chains for the block copolymers with a shorter PLLA block. A model describing the structure of the individual micelles and their clusters was proposed.
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Razuvaeva E. V. et al. Effect of Composition and Molecular Structure of Poly(l-lactic acid)/Poly(ethylene oxide) Block Copolymers on Micellar Morphology in Aqueous Solution // Langmuir. 2018. Vol. 34. No. 50. pp. 15470-15482.
GOST all authors (up to 50) Copy
Razuvaeva E. V., Kulebyakina A. I., Streltsov D. R., Bakirov A. V., Kamyshinsky R. A., Kuznetsov N. M., Chvalun S. N., Shtykova E. Effect of Composition and Molecular Structure of Poly(l-lactic acid)/Poly(ethylene oxide) Block Copolymers on Micellar Morphology in Aqueous Solution // Langmuir. 2018. Vol. 34. No. 50. pp. 15470-15482.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1021/acs.langmuir.8b03379
UR - https://doi.org/10.1021/acs.langmuir.8b03379
TI - Effect of Composition and Molecular Structure of Poly(l-lactic acid)/Poly(ethylene oxide) Block Copolymers on Micellar Morphology in Aqueous Solution
T2 - Langmuir
AU - Razuvaeva, Ekaterina V
AU - Kulebyakina, Alevtina I
AU - Streltsov, Dmitry R
AU - Bakirov, A. V.
AU - Kamyshinsky, Roman A.
AU - Kuznetsov, N. M.
AU - Chvalun, S. N.
AU - Shtykova, Eleonora
PY - 2018
DA - 2018/11/15
PB - American Chemical Society (ACS)
SP - 15470-15482
IS - 50
VL - 34
PMID - 30441905
SN - 0743-7463
SN - 1520-5827
ER -
BibTex |
Cite this
BibTex (up to 50 authors) Copy
@article{2018_Razuvaeva,
author = {Ekaterina V Razuvaeva and Alevtina I Kulebyakina and Dmitry R Streltsov and A. V. Bakirov and Roman A. Kamyshinsky and N. M. Kuznetsov and S. N. Chvalun and Eleonora Shtykova},
title = {Effect of Composition and Molecular Structure of Poly(l-lactic acid)/Poly(ethylene oxide) Block Copolymers on Micellar Morphology in Aqueous Solution},
journal = {Langmuir},
year = {2018},
volume = {34},
publisher = {American Chemical Society (ACS)},
month = {nov},
url = {https://doi.org/10.1021/acs.langmuir.8b03379},
number = {50},
pages = {15470--15482},
doi = {10.1021/acs.langmuir.8b03379}
}
MLA
Cite this
MLA Copy
Razuvaeva, Ekaterina V., et al. “Effect of Composition and Molecular Structure of Poly(l-lactic acid)/Poly(ethylene oxide) Block Copolymers on Micellar Morphology in Aqueous Solution.” Langmuir, vol. 34, no. 50, Nov. 2018, pp. 15470-15482. https://doi.org/10.1021/acs.langmuir.8b03379.