[PDF][PDF] Temperature dependence of the deviations from bulk behavior in ultrathin polymer films

S Napolitano, V Lupascu, M Wübbenhorst - Macromolecules, 2008 - lirias.kuleuven.be
The temperature dependence of the deviations from bulk behavior in ultrathin polymer films
is demonstrated. The validity of a model aiming to rationalize the influence of interfacial …

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 …

[HTML][HTML] Effects of a “bound” substrate layer on the dynamics of supported polymer films

W Zhang, JF Douglas, FW Starr - The Journal of Chemical Physics, 2017 - pubs.aip.org
It is widely appreciated that an attractive polymer-substrate interaction can slow relaxation in
thin supported polymer films and polymer nanocomposites. Recent measurements and …

The dynamics of thin polymer films

RAL Jones - Current opinion in colloid & interface science, 1999 - Elsevier
An increasing amount of experimental data now supports the idea that the dynamics of thin
polymer films is different from bulk. An experimental consensus now supports the previously …

Can thickness and interfacial interactions univocally determine the behavior of polymers confined at the nanoscale?

S Napolitano, C Rotella, M Wubbenhorst - ACS macro letters, 2012 - ACS Publications
The behavior of polymers confined in ultrathin films (thickness< 200 nm) can sensitively
differ from that observed in macroscopic samples. Based on the simple arguments of finite …

Above, below, and in‐between the two glass transitions of ultrathin free‐standing polystyrene films: Thermal expansion coefficient and physical aging

JE Pye, CB Roth - Journal of Polymer Science Part B: Polymer …, 2015 - Wiley Online Library
In previous work we observed two simultaneous transitions in high molecular weight (MW)
free‐standing polystyrene films that were interpreted as two thickness‐dependent reduced …

Surface dynamics in rubbed polymer thin films probed with optical birefringence measurements

AD Schwab, DMG Agra, JH Kim, S Kumar… - …, 2000 - ACS Publications
Measurements of the optical birefringence were used to probe the relaxation of rubbed
ultrathin polystyrene (PS) films on glass substrates. It was found that the glass transition …

Reduction of the glass temperature of thin freely standing polymer films caused by the decrease of the coupling parameter in the coupling model

KL Ngai, AK Rizos, DJ Plazek - Journal of non-crystalline solids, 1998 - Elsevier
Dramatic reduction of the glass temperature, Tg, in freely standing polymer thin films has
been found when the thickness of the films become approximately smaller than the average …

Glass transition of microtome-sliced thin films

X Wang, W Zhou - Macromolecules, 2002 - ACS Publications
The anomalous change of the glass transition temperature, Tg, of materials in confined
geometry has drawn much attention recently. 1-20 The effective Tg in a thin film geometry …

Nanoscale adsorbed structures as a robust approach for tailoring polymer film stability

N Jiang, J Wang, X Di, J Cheung, W Zeng, MK Endoh… - Soft Matter, 2016 - pubs.rsc.org
The stability or wettability of thin polymer films on solids is of vital interest in traditional
technologies as well as in new emerging nanotechnologies. We report here that nanoscale …