Effect of Composition and Molecular Structure of Poly(l -lactic acid)/Poly(ethylene oxide) Block Copolymers on Micellar Morphology in Aqueous Solution
Ekaterina V Razuvaeva
1, 2
,
Alevtina I Kulebyakina
2
,
Dmitry R Streltsov
1, 2
,
A. V. Bakirov
1, 2
,
Roman A. Kamyshinsky
2, 3
,
N. M. Kuznetsov
2
,
S. N. Chvalun
1, 2
,
Eleonora Shtykova
3, 4
3
Publication type: Journal Article
Publication date: 2018-11-15
scimago Q1
wos Q2
SJR: 0.763
CiteScore: 6.0
Impact factor: 3.9
ISSN: 07437463, 15205827
PubMed ID:
30441905
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.
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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.
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RIS
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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 -
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BibTex (up to 50 authors)
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@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}
}
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.