This title appears in the Scientific Report :
2012
Please use the identifier:
http://hdl.handle.net/2128/7377 in citations.
Please use the identifier: http://dx.doi.org/10.1039/C1SM06809A in citations.
Equilibrium exchange kinetics in n-alkyl-PEO polymeric micelles: single exponential relaxation and chain length dependence
Equilibrium exchange kinetics in n-alkyl-PEO polymeric micelles: single exponential relaxation and chain length dependence
In this communication we present first results on the chain exchange kinetics of n-alkyl-PEO polymeric micelles by time-resolved small angle neutron scattering. We found that the rate strongly depends on the alkyl-chain length and that the relaxation function almost perfectly follows the single expo...
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Personal Name(s): | Zinn, T. |
---|---|
Willner, L. / Lund, R. / Pipich, V. / Richter, D. | |
Contributing Institute: |
Neutronenstreuung; ICS-1 Neutronenstreuung; JCNS-1 |
Published in: | Soft matter, 8 (2012) S. 623 - 626 |
Imprint: |
Cambridge
Royal Society of Chemistry (RSC)
2012
|
Physical Description: |
623 - 626 |
DOI: |
10.1039/C1SM06809A |
Document Type: |
Journal Article |
Research Program: |
Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) BioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung |
Series Title: |
Soft Matter
8 |
Subject (ZB): | |
Link: |
Get full text Published under German "Allianz" Licensing conditions on 2011-12-01. Available in OpenAccess from 2012-12-01 |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1039/C1SM06809A in citations.
In this communication we present first results on the chain exchange kinetics of n-alkyl-PEO polymeric micelles by time-resolved small angle neutron scattering. We found that the rate strongly depends on the alkyl-chain length and that the relaxation function almost perfectly follows the single exponential decay predicted by theory. The key achievement of this study is the experimental verification that core block polydispersity accounts for the almost logarithmic time decay in block copolymer micelles as recently suggested by Choi et al. The results thus directly show that unimer exchange is the main mechanism for molecular exchange in block copolymer micelles. |