Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 16, 2009
Previous Article Next Article

On the mechanism of formation of vesicles from poly(ethylene oxide)-block-poly(caprolactone) copolymers

Author affiliations

Abstract

Micelles, worm-like micelles and vesicles were prepared from poly(ethylene oxide)-b-poly(caprolactone) block copolymersvia a solvent switch method, and characterised by light scattering, X-ray scattering and cryo-transmission electron microscopy. The volume fraction of ethylene oxide, as the hydrophilic part in these polymers, determined the morphology in dilute solution, with spherical micelles, worm-like micelles, vesicles and precipitate being formed as the volume fraction decreased. The mechanism by which vesicles were formed in these systems during sequential dilution of the initial THF-rich solution with water was probed. It was shown that vesicles formed via a sequence of morphologies. The transitions between different self-assembled structures were followed using dynamic cryo-TEM. The behaviour of the PEO-b-PCL system was compared with the well-studied poly(acrylic acid)-b-poly(styrene) system; the behaviour was shown to differ in the final stage during the transition from worm-like micelles to vesicles.

Graphical abstract: On the mechanism of formation of vesicles from poly(ethylene oxide)-block-poly(caprolactone) copolymers

Back to tab navigation

Supplementary files

Article information


Submitted
16 Apr 2009
Accepted
19 May 2009
First published
24 Jun 2009

Soft Matter, 2009,5, 3086-3096
Article type
Paper

On the mechanism of formation of vesicles from poly(ethylene oxide)-block-poly(caprolactone) copolymers

D. J. Adams, C. Kitchen, S. Adams, S. Furzeland, D. Atkins, P. Schuetz, C. M. Fernyhough, N. Tzokova, A. J. Ryan and M. F. Butler, Soft Matter, 2009, 5, 3086
DOI: 10.1039/B907628J

Social activity

Search articles by author

Spotlight

Advertisements