Local and average glass transitions in polymer thin films

JEG Lipson, ST Milner - Macromolecules, 2010 - ACS Publications
In the companion paper (DOI 10.1021/ma101098d), we presented a quantitative theory for
the suppression of the glass transition in a thin polymer film. Our delayed glassification (DG) …

Local variation of fragility and glass transition temperature of ultra-thin supported polymer films

PZ Hanakata, JF Douglas, FW Starr - The Journal of chemical physics, 2012 - pubs.aip.org
Despite extensive efforts, a definitive picture of the glass transition of ultra-thin polymer films
has yet to emerge. The effect of film thickness h on the glass transition temperature T g has …

Effect of interfaces on the glass transition of supported and freestanding polymer thin films

RP White, CC Price, JEG Lipson - Macromolecules, 2015 - ACS Publications
We investigate the glass transition behavior in polymer thin films using a model equation-of-
state approach, which involves molecular parameters whose values are determined from fits …

The glass transition in thin polymer films

JA Forrest, K Dalnoki-Veress - Advances in Colloid and Interface Science, 2001 - Elsevier
In this article, we present a detailed account of important recent developments in the rapidly
evolving area of glass transitions in thin polymer films. We review the case of polymer films …

Delayed Glassification Model for Free-Surface Suppression of Tg in Polymer Glasses

ST Milner, JEG Lipson - Macromolecules, 2010 - ACS Publications
Suppression of the glass transition by some tens of degrees within a few tens of nanometers
of a free surface in a polymer film is a technologically important, commonly observed, as-yet …

Dynamics near free surfaces and the glass transition in thin polymer films: a view to the future

MD Ediger, JA Forrest - Macromolecules, 2014 - ACS Publications
The past 20 years have seen a substantial effort to understand dynamics and the glass
transition in thin polymer films. In this Perspective, we consider developments in this field …

The glass transition of thin polymer films: some questions, and a possible answer

S Herminghaus, K Jacobs, R Seemann - The European Physical Journal …, 2001 - Springer
A simple and predictive model is put forward explaining the experimentally observed
substantial shift of the glass transition temperature, T g, of sufficiently thin polymer films. It …

Simulating Local Tg Reporting Layers in Glassy Thin Films

J DeFelice, ST Milner, JEG Lipson - Macromolecules, 2016 - ACS Publications
One of the most notable deviations from bulk fluid properties is the onset of a thickness-
dependent glass transition temperature (T g) for nanometrically thin polymer films …

Densification and depression in glass transition temperature in polystyrene thin films

G Vignaud, M S. Chebil, JK Bal, N Delorme, T Beuvier… - Langmuir, 2014 - ACS Publications
Ellipsometry and X-ray reflectivity were used to characterize the mass density and the glass
transition temperature of supported polystyrene (PS) thin films as a function of their …

The glass transition and relaxation dynamics in thin polymer films

JA FORREST, RAL JONES - Polymer surfaces, interfaces and thin …, 2000 - World Scientific
We review the experimental data for the anomalous behavior of the glass transition
temperature, Tg, in thin polymer films, and show that despite a number of apparent …