Effects of free-surface and interfacial layers and plasticizer content on the distribution of glass transition temperatures in nanoconfined polymers

Christopher J. Ellison*, John M Torkelson

*Corresponding author for this work

Research output: Contribution to conferencePaper

Abstract

A novel fluorescence/multilayer method has been developed allowing the first determination of the distribution of glass transition temperatures (Tg) in thin and ultrathin polymer films. The perturbation in polymer dynamics associated with Tg near a free surface of a polymer film, leading to a lower Tg at the surface, affects the local Tg several tens of nanometers into the film. The extent to which the Tg dynamics smoothly transition from enhanced to bulk states depends strongly on nanoconfinement. However, the impact of nanoconfinement on Tg is also a strong function of plasticizer content and attractive interactions at a polymer-substrate interface. The potential of these studies for understanding polymer nanocomposite behavior is discussed.

Original languageEnglish (US)
Pages2338-2342
Number of pages5
StatePublished - Jun 3 2004
EventANTEC 2004 - Annual Technical Conference Proceedings - Chicago, IL., United States
Duration: May 16 2004May 20 2004

Other

OtherANTEC 2004 - Annual Technical Conference Proceedings
CountryUnited States
CityChicago, IL.
Period5/16/045/20/04

Fingerprint

Plasticizers
Polymers
Polymer films
Ultrathin films
Nanocomposites
Multilayers
Fluorescence
Substrates
Glass transition temperature

Keywords

  • Fluorescence
  • Glass transition temperature
  • Nanoconfinement effects
  • Plasticizer

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Polymers and Plastics

Cite this

Ellison, C. J., & Torkelson, J. M. (2004). Effects of free-surface and interfacial layers and plasticizer content on the distribution of glass transition temperatures in nanoconfined polymers. 2338-2342. Paper presented at ANTEC 2004 - Annual Technical Conference Proceedings, Chicago, IL., United States.
Ellison, Christopher J. ; Torkelson, John M. / Effects of free-surface and interfacial layers and plasticizer content on the distribution of glass transition temperatures in nanoconfined polymers. Paper presented at ANTEC 2004 - Annual Technical Conference Proceedings, Chicago, IL., United States.5 p.
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Ellison, CJ & Torkelson, JM 2004, 'Effects of free-surface and interfacial layers and plasticizer content on the distribution of glass transition temperatures in nanoconfined polymers', Paper presented at ANTEC 2004 - Annual Technical Conference Proceedings, Chicago, IL., United States, 5/16/04 - 5/20/04 pp. 2338-2342.

Effects of free-surface and interfacial layers and plasticizer content on the distribution of glass transition temperatures in nanoconfined polymers. / Ellison, Christopher J.; Torkelson, John M.

2004. 2338-2342 Paper presented at ANTEC 2004 - Annual Technical Conference Proceedings, Chicago, IL., United States.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Effects of free-surface and interfacial layers and plasticizer content on the distribution of glass transition temperatures in nanoconfined polymers

AU - Ellison, Christopher J.

AU - Torkelson, John M

PY - 2004/6/3

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N2 - A novel fluorescence/multilayer method has been developed allowing the first determination of the distribution of glass transition temperatures (Tg) in thin and ultrathin polymer films. The perturbation in polymer dynamics associated with Tg near a free surface of a polymer film, leading to a lower Tg at the surface, affects the local Tg several tens of nanometers into the film. The extent to which the Tg dynamics smoothly transition from enhanced to bulk states depends strongly on nanoconfinement. However, the impact of nanoconfinement on Tg is also a strong function of plasticizer content and attractive interactions at a polymer-substrate interface. The potential of these studies for understanding polymer nanocomposite behavior is discussed.

AB - A novel fluorescence/multilayer method has been developed allowing the first determination of the distribution of glass transition temperatures (Tg) in thin and ultrathin polymer films. The perturbation in polymer dynamics associated with Tg near a free surface of a polymer film, leading to a lower Tg at the surface, affects the local Tg several tens of nanometers into the film. The extent to which the Tg dynamics smoothly transition from enhanced to bulk states depends strongly on nanoconfinement. However, the impact of nanoconfinement on Tg is also a strong function of plasticizer content and attractive interactions at a polymer-substrate interface. The potential of these studies for understanding polymer nanocomposite behavior is discussed.

KW - Fluorescence

KW - Glass transition temperature

KW - Nanoconfinement effects

KW - Plasticizer

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Ellison CJ, Torkelson JM. Effects of free-surface and interfacial layers and plasticizer content on the distribution of glass transition temperatures in nanoconfined polymers. 2004. Paper presented at ANTEC 2004 - Annual Technical Conference Proceedings, Chicago, IL., United States.