Development of self-assembled poly(2-ethyl-2-oxazoline)-b-poly(ε-caprolactone) (PEtOx-b-PCL) copolymeric nanostructures in aqueous solution and evaluation of their morphological transitions

Amphiphilic block copolymers are known to self-assemble into various morphologies, including ellipsoids, tubular structures, toroids, vesicles, micellar structures. In this paper, we discuss the synthesis of copolymeric nanostructures (CNs) using poly(2-ethyl-2-oxazoline)-block-poly(ε-caprolactone)...

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Bibliographic Details
Published in:Express polymer letters 2020-11, Vol.14 (11), p.1048-1062
Main Authors: Ozkose, U. U., Gulyuz, S., Oz, U. C., Tasdelen, M. A., Alpturk, O., Bozkir, A., Yilmaz, O.
Format: Article
Language:English
Subjects:
amphiphilic block copolymers
Aqueous solutions
Block copolymers
Chemical synthesis
Copolymers
Ellipsoids
Fourier transforms
Molecular weight
morphological transition
Morphology
nanomaterials
Nanostructure
NMR
Nuclear magnetic resonance
poly(2-ethyl-2-oxazoline)
Polycaprolactone
Polyethyloxazoline
Self-assembly
Sensors
Spectrum analysis
Surfactants
Transmission electron microscopy
Vacuum distillation
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Summary:Amphiphilic block copolymers are known to self-assemble into various morphologies, including ellipsoids, tubular structures, toroids, vesicles, micellar structures. In this paper, we discuss the synthesis of copolymeric nanostructures (CNs) using poly(2-ethyl-2-oxazoline)-block-poly(ε-caprolactone) (PEtOx-b-PCL) amphiphilic block copolymers. Our data indicate that - varying the molecular weight and the number of repeating units dictate the nature of morphology. That is, the formation of self-assembled morphologies from ellipsoid to rod-like architectures are observed in aqueous solution, depending on the mass ratio of the hydrophilic block (fPEtOx). To best of our knowledge, this is the first report on the morphological transitions of PEtOx-b-PCL amphiphilic block copolymer-based CNs with different fPEtOx values in the literature.
ISSN:1788-618X
1788-618X
DOI:10.3144/expresspolymlett.2020.85