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Cited by 86Polymer Surface Interaction StudiesForce Microscopy Techniques and ApplicationsLubricants and Their Additives

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Preferential Solvation and Its Effect on the Lubrication Properties of a Surface-Bound, Brushlike Copolymer

Müller, Markus T., Yan, Xiaoping, Lee, Seunghwan, Perry, Scott S., Spencer, Nicholas D.·2005·Macromolecules
DOI 10.1021/ma047468x
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Abstract

We have investigated the collapse−stretching transition of a surface-bound, brushlike copolymer, poly( l -lysine)- graft -poly(ethylene glycol) (PLL- g -PEG), and the consequence of such transitions on the frictional properties of this coating. The frictional properties of the interface have been measured by colloidal-probe lateral force microscopy (LFM) in liquid environments on the nanoscale. The collapse−stretching transition has been induced through the systematic variation of the chemical composition of the binary solvent mixture comprised of an aqueous buffer solution and 2-propanol. The influence of solvent composition on the polymer conformation was monitored by comparing measurements conducted with optical waveguide lightmode spectroscopy (OWLS) and quartz crystal microbalance with dissipation monitoring (QCM-D). The combined approach employing QCM-D and OWLS has allowed the quantification of the mass of solvent molecules absorbed in the brushlike structure of PLL- g -PEG and has revealed a significant preferential solvation effect. This study has demonstrated preferential solvation of a surface-bound polymer and the role of such solvation in maintaining the favorable lubricating properties of a PEG brush when exposed to mixtures of good and poor solvents.

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  • Charged brushes provide considerably better lubrication up to higher compression than either neutral brushes (in organic or aqueous media) or adsorbed polyelectrolytes.

    “As indicated by the different data symbols and the cartoons in Fig. 9, the charged brushes provide considerably better lubrication up to higher compression than either neutral brushes -whether in organic or in aqueous media [75, 76] -or than adsorbed polyelectrolytes [77, 78].”

    From Hydration lubrication (2013) · cites this paper as [75]

  • Neutral brushes in aqueous media, such as PEO, provide quite weak lubrication.

    “We note that neutral brushes in aqueous media, such as brushes consisting of poly(ethylene oxide), also provide quite weak lubrication [75, 76].”

    From Hydration lubrication (2013) · cites this paper as [75]

  • The lower hydration of polar groups would also explain why PEO brushes in water provide only very moderate lubrication.

    “It would also readily explain why PEO brushes in water [75, 76] provide only very moderate lubrication.”

    From Hydration lubrication (2013) · cites this paper as [75]

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Metadata

Authors
Müller, M. T., Yan, X., Lee, S., Perry, S. S., & Spencer, N. D.
Affiliations
ETH Zurich (CH)
Corresponding author
Spencer, Nicholas D.
ORCID
Venue
Macromolecules
Publisher
American Chemical Society (ACS)
Published
2005-03-25
Volume
38
Issue
9
Pages
3861-3866
ISSN
  • 0024-9297 (ISSN-L)
  • 1520-5835
DOI
10.1021/ma047468x
OpenAlex
W2011293703
Cited by
86
References
1
Citations by year
2026: 1 · 2024: 4 · 2023: 1 · 2022: 1 · 2020: 1 · 2019: 6 · 2018: 3 · 2017: 3 · 2016: 8 · 2015: 4 · 2014: 4 · 2013: 10 · 2012: 6
FWCI
3.21
Type
journal article
Language
en
Open access
closed
Locations
Macromolecules (publishedVersion)
Topics
  • Physical Sciences › Materials Science › Surfaces, Coatings and Films › Polymer Surface Interaction Studies
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Force Microscopy Techniques and Applications
  • Physical Sciences › Engineering › Mechanical Engineering › Lubricants and Their Additives
Keywords
preferential solvation, polymer brushes, poly(ethylene glycol) brushes, friction, lubrication, solvent composition, optical waveguide lightmode spectroscopy, QCM-D, solvent absorption, nanoscale interfaces

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