ISIS Neutron and Muon Source Data Journal
This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
Crowding and salinity effects on the structure of PEG-containing brushes
Abstract: Strongly hydrated polymers are used as coatings for biofouling prevention, and poly(ethylene glycol) (PEG) is a widely used example of this. Wider use of PEG is limited by insufficient stability but this can be improved by adding PEG sidechains to a more stable polymer backbone. However, this alters the structural properties in ways that can be difficult to predict. Here, we will explore the properties of polymer brushes with PEG sidechains from two aspects: i) These brushes show thickness-dependent antifouling performance, which has been associated to differences in hydration and crowding of the polymer with thickness, but further details about the structure, in particular qualitative and quantitative differences in the chain segment density distributions, would considerably improve our understanding and facilitate the development of these brushes into practical coatings. ii) Poor antifouling performance of PEG in solutions of high salinity is hypothesized to be an effect of the recently proposed charging of PEG in aqueous solutions due to adsorption of hydronium ions. If correct, this would imply some degree of polyelectrolyte properties, and subsequent structural changes at high salinity, which we will explore as well.
Experimenter: Dr Thomas Arnold
Experimenter: Dr Thomas Ederth
Experimenter: Dr Andrew McCluskey
Experimenter: Mr Mohammad Javad Jafari
Experimenter: Dr Bela Nagy
Local Contact: Dr Stephen Hall
DOI: 10.5286/ISIS.E.RB2310596
ISIS Experiment Number: RB2310596
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2310596-1 | OFFSPEC | 11 May 2026 | Download |
| 10.5286/ISIS.E.RB2310596-2 | OFFSPEC | 09 December 2026 | Download |
| 10.5286/ISIS.E.RB2310596-3 | OFFSPEC | 23 March 2027 | Download |
Publisher: STFC ISIS Neutron and Muon Source
Data format: RAW/Nexus
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Data Citation
The recommended format for citing this dataset in a research
publication is as:
[author], [date], [title], [publisher],
[doi]
For Example:
Dr Thomas Arnold et al; (2023): Crowding and salinity effects on the structure of PEG-containing brushes, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2310596
Data is released under the CC-BY-4.0 license.
