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Nano/Micro-Rheology of Perfluoropolyether Lubricants

[+] Author Affiliations
Hyoung J. Choi

Inha University, Incheon, Korea

Qian Guo, Pil Seung Chung, Myung S. Jhon

Carnegie Mellon University, Pittsburgh, PA

Paper No. WTC2005-64190, pp. 579-580; 2 pages
doi:10.1115/WTC2005-64190
From:
  • World Tribology Congress III
  • World Tribology Congress III, Volume 1
  • Washington, D.C., USA, September 12–16, 2005
  • Conference Sponsors: Tribology Division
  • ISBN: 0-7918-4201-0 | eISBN: 0-7918-3767-X
  • Copyright © 2005 by ASME

abstract

The bulk rheological properties, such as shear viscosity and storage & loss moduli of perfluoropolyether (PFPE) with different molecular weights and endgroup functionalities were examined via a rotational rheometer. Equilibrium and non-equilibrium molecular dynamics simulations were performed to provide a molecular visualization tool to clearly understand the intrinsic nanostructure as well as to predict the bulk shear viscosity, which reveals a strong dependence on temperature and PFPE molecular architecture.

Copyright © 2005 by ASME

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