Effects of free surface and substrate interactions on the distribution of glass transition temperatures in nanoconfined polymers

Hui Deng*, John M Torkelson

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A fluorescence/multilayer technique was used to determine the distribution of glass transition temperatures (Tgs) in nanoconfined poly(methyl methacrylate) films. Poly(methyl methacrylate) exhibits an attraction to silica, shown by an increase in Tg near the substrate. Perturbations in dynamics associated with Tg near a free surface lead to a T g decrease. Both effects are shown to penetrate some tens of nanometers into a nanoconfined film. Effects of nanoconfinement on the transition between free-surface, bulk, and substrate Tg are explored, with potential application to nanocomposite behavior.

Original languageEnglish (US)
Title of host publication67th Annual Technical Conference of the Society of Plastics Engineers 2009, ANTEC 2009
Pages801-804
Number of pages4
Volume2
StatePublished - Nov 25 2009
Event67th Annual Technical Conference of the Society of Plastics Engineers 2009, ANTEC 2009 - Chicago, IL, United States
Duration: Jun 22 2009Jun 24 2009

Other

Other67th Annual Technical Conference of the Society of Plastics Engineers 2009, ANTEC 2009
CountryUnited States
CityChicago, IL
Period6/22/096/24/09

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Polymers and Plastics

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    Deng, H., & Torkelson, J. M. (2009). Effects of free surface and substrate interactions on the distribution of glass transition temperatures in nanoconfined polymers. In 67th Annual Technical Conference of the Society of Plastics Engineers 2009, ANTEC 2009 (Vol. 2, pp. 801-804)