Interfacial properties and applications of polymer-grafted nanoparticles

Trishna Saigal, Nicolas J. Alvarez, Gunnar Duner, Shelley L. Anna, Lynn M. Walker, Krzysztof Matyjaszewski, Andra Dedinaite, Esben Thormann, Per Claesson, Robert D. Tilton

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

Abstract

The development of "grafting from" methods of brush formation by polymn. from surface-bound initiators makes it possible to create brush-decorated nanoparticles with large grafting densities. Such particles have proven to be effective emulsifying agents by virtue of their high affinity adsorption to oil/water interfaces. Also, adsorbing brush-grafted nanoparticles as brush building blocks potentially can be used to create a brush-like coating on a larger surface. This presentation will focus on silica nanoparticles with poly(dimethylamino ethylmethacrylate) brushes. The interfacial properties of these particles, at oil/water, air/water, or silica/water interfaces, depend on the grafting d. and soln. conditions that affect brush ionization and long-range colloidal forces. The interfacial tension and Gibbs elasticity of particle monolayers on fluid interfaces will be discussed in connection with Pickering emulsion applications, and adsorption isotherms, layer organization, normal forces and lateral forces on solid surfaces will be discussed with application to tribol.
Original languageEnglish
Publication date2011
Publication statusPublished - 2011
Externally publishedYes
Event242nd National Meeting of the American-Chemical-Society (ACS) - Denver, CO, United States
Duration: 28 Aug 20111 Sep 2011
Conference number: 242
http://cen.acs.org/articles/89/i26/242nd-ACS-National-Meeting.html

Conference

Conference242nd National Meeting of the American-Chemical-Society (ACS)
Number242
Country/TerritoryUnited States
CityDenver, CO
Period28/08/201101/09/2011
Internet address

Keywords

  • Gibbs elasticity
  • grafting density
  • interfacial tension
  • nanoparticle interfacial properties
  • particle interfacial properties
  • Pickering emulsion
  • poly(dimethylamino ethylmethacrylate)
  • silica nanoparticles
  • 00520, General biology - Symposia, transactions and proceedings
  • 10511, Biophysics - Bioengineering
  • Biomaterials

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