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  Interaction Forces between Pegylated Star-Shaped Polymers at Mica Surfaces

Banquy, X., Le Dévédec, F., Cheng, H.-W., Faivre, J., Zhu, J. X. X., & Valtiner, M. (2017). Interaction Forces between Pegylated Star-Shaped Polymers at Mica Surfaces. ACS Applied Materials and Interfaces, 9(33), 28027-28033. doi:10.1021/acsami.7b06922.

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Banquy, Xavier1, Author           
Le Dévédec, Frantz2, 3, Author           
Cheng, Hsiu-Wei4, 5, Author           
Faivre, Jimmy6, Author           
Zhu, Julian X. X.2, Author           
Valtiner, Markus4, 7, Author           
1Canada Research Chair in Bio-Inspired Materials, Faculté de Pharmacie, Université de Montréal, Montréal, Québec, Canada, ou_persistent22              
2Department of Chemistry, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal, QC, Canada, persistent22              
3Leslie Dan Faculty of Pharmacy, Department of Pharmaceutical Sciences, University of Toronto, Canada, persistent22              
4Interaction Forces and Functional Materials, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863357              
5Institut Fír Physikalische Chemie, TU Bergakademie Freiberg, Leipziger Straße 29, Freiberg, Germany, persistent22              
6Faculty of Pharmacy, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal, QC, Canada, persistent22              
7Institute for physical chemistry II, Technische Universität Bergakademie Freiberg, Leipzigerstraße 29, 09599 Freiberg, Germany , ou_persistent22              


Free keywords: ANTIFOULING COATINGS; AGGREGATION BEHAVIOR; THIN-FILM; LUBRICATION; POLYELECTROLYTE; ADSORPTION; BRUSHES; TEMPERATURE; FRICTION; NANOPARTICLESScience & Technology - Other Topics; Materials Science; cholic acid; pegylated polymers; dendronized brushes; surface forces; hydration layer;
 Abstract: We present a study focused on characterizing the interaction forces between mica surfaces across solutions containing star-shaped polymers with cationic ends. Using the surface forces apparatus, we show that the interaction forces in pure water between surfaces covered with the polymers can be adequately described by the dendronized brush model. In that framework, our experimental data suggest that the number of branches adsorbed at the surface decreases as the: concentration of polymer in the adsorbing solution Increases. The onset of interaction was also shown to increase:with the concentration of polymer in solution up to distances much larger than the contour, length of the polymer, suggesting that the nanostructure of the polymer film is significantly different from that of a monolayer. High compression of the polymer film adsorbed at low polymer concentration revealed the appearance of a highly structured hydration layer underneath the polymer layer. These restilts support that charged polymer chains do not necessarily come into close contact with the surface even if strong electrostatic interaction is present. Altogether, our results provide a comprehensive understanding of the interfacial behavior of star-shaped polymers and reveal the unexpected role of hydration water in the control of the polymer conformation.


Language(s): eng - English
 Dates: 2017-08-23
 Publication Status: Published in print
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: ISI: 000408518800076
DOI: 10.1021/acsami.7b06922
 Degree: -



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Title: ACS Applied Materials and Interfaces
  Abbreviation : ACS Appl. Mater. Interfaces
Source Genre: Journal
Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 9 (33) Sequence Number: - Start / End Page: 28027 - 28033 Identifier: ISSN: 1944-8244
CoNE: https://pure.mpg.de/cone/journals/resource/1944-8244