This title appears in the Scientific Report :
2015
Please use the identifier:
http://dx.doi.org/10.1021/acs.macromol.5b00788 in citations.
Bulk Phase and Surface Dynamics of PEG Microgel Particles
Bulk Phase and Surface Dynamics of PEG Microgel Particles
The adsorption of ethylene glycol (EG) based microgel particles at silicon surfaces was studied. Monodisperse p-MeO2MA-co-OEGMA microgel particles were synthesized by precipitation polymerization. Translational and inner dynamics of p-ME3O5 and p-ME3O26 microgels in bulk were investigated by dynamic...
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Personal Name(s): | Gawlitza, Kornelia |
---|---|
Ivanova, Oxana / Radulescu, Aurel / Holderer, Olaf / von Klitzing, Regine / Wellert, Stefan (Corresponding author) | |
Contributing Institute: |
Neutronenstreuung; JCNS-1 JCNS-FRM-II; JCNS-FRM-II |
Published in: | Macromolecules, 48 (2015) 16, S. 5807 - 5815 |
Imprint: |
Washington, DC
Soc.
2015
|
DOI: |
10.1021/acs.macromol.5b00788 |
Document Type: |
Journal Article |
Research Program: |
Jülich Centre for Neutron Research (JCNS) FRM II / MLZ |
Subject (ZB): | |
Publikationsportal JuSER |
The adsorption of ethylene glycol (EG) based microgel particles at silicon surfaces was studied. Monodisperse p-MeO2MA-co-OEGMA microgel particles were synthesized by precipitation polymerization. Translational and inner dynamics of p-ME3O5 and p-ME3O26 microgels in bulk were investigated by dynamic light scattering (DLS) and neutron spin echo spectroscopy in transmission geometry (NSE). Here, cooperative diffusion and Zimm type dynamics were observed. The inner dynamics of these microgel particles in adsorbed state was explored by neutron spin echo spectroscopy under grazing incidence (GINSES). The reported GINSES experiments demonstrate the feasibility of these surface sensitive measurements. It indicates a slowing down of the inner dynamics in the vicinity of the substrate. At increasing distance from the substrate, the relaxation is comparable to the bulk. |