Unveiling the dynamics of self-assembled layers of thin films of poly (vinyl methyl ether)(PVME) by nanosized relaxation spectroscopy

S Madkour, P Szymoniak, M Heidari… - … Applied Materials & …, 2017 - ACS Publications
A combination of nanosized dielectric relaxation (BDS) and thermal spectroscopy (SHS) was
utilized to characterize the dynamics of thin films of poly (vinyl methyl ether)(PVME) …

Unraveling the dynamics of nanoscopically confined PVME in thin films of a miscible PVME/PS blend

S Madkour, P Szymoniak, J Radnik… - ACS applied materials …, 2017 - ACS Publications
Broadband dielectric spectroscopy (BDS) was employed to investigate the glassy dynamics
of thin films (7–200 nm) of a poly (vinyl methyl ether)(PVME)/polystyrene (PS) blend (50: 50 …

Do interfacial layers in thin films act as an independent layer within thin films?

S Madkour, M Gawek, A Hertwig… - Macromolecules, 2020 - ACS Publications
The thermodynamic behavior of thin Poly (vinyl methyl ether)(PVME) films including the
irreversible adsorbed layer on the substrate is investigated. In the first step, the growth …

[HTML][HTML] Exploring the broadening and the existence of two glass transitions due to competing interfacial effects in thin, supported polymer films

EC Glor, GV Angrand, Z Fakhraai - The Journal of Chemical Physics, 2017 - pubs.aip.org
In this report, we use ellipsometry to characterize the glass transition in ultra-thin films of poly
(2-vinyl pyridine)(P2VP) supported on a silicon substrate. P2VP is known to have attractive …

Unexpected behavior of ultra-thin films of blends of polystyrene/poly (vinyl methyl ether) studied by specific heat spectroscopy

S Madkour, P Szymoniak, C Schick… - The Journal of Chemical …, 2017 - pubs.aip.org
Specific heat spectroscopy (SHS) employing AC nanochip calorimetry was used to
investigate the glassy dynamics of ultra-thin films (thicknesses: 10 nm–340 nm) of a polymer …

Interfacial and annealing effects on primary α-relaxation of ultrathin polymer films investigated at nanoscale

HK Nguyen, M Labardi, S Capaccioli… - …, 2012 - ACS Publications
The influence of interfacial interactions and annealing time on dynamics of the α-relaxation
in ultrathin poly (vinyl acetate) films deposited on different substrates has been studied using …

Microscale mobile surface double layer in a glassy polymer

H Yuan, J Yan, P Gao, SK Kumar, OKC Tsui - Science Advances, 2022 - science.org
This study examines the origin of the widely different length scales, ht—nanometers to
micrometers—that have been observed for the propagation of the near-surface enhanced …

Effect of interface interaction on the segmental dynamics of poly (vinyl acetate) investigated by local dielectric spectroscopy

R Casalini, D Prevosto, M Labardi… - ACS Macro …, 2015 - ACS Publications
The segmental dynamics of poly (vinyl acetate)(PVAc) thin films were measured in the
presence of an aluminum interface and in contact with an incompatible polymer, poly (4 …

Unexpected impact of irreversible adsorption on thermal expansion: Adsorbed layers are not that dead

ML Braatz, L Infantas Meléndez, M Sferrazza… - The Journal of …, 2017 - pubs.aip.org
We investigated the impact of irreversible adsorption on the mechanisms of thermal
expansion of 1D confined polymer layers. For spincoated films (polystyrene on aluminum) of …

[HTML][HTML] Dynamic and temperature dependent response of physical vapor deposited Se in freely standing nanometric thin films

H Yoon, GB McKenna - The Journal of Chemical Physics, 2016 - pubs.aip.org
Here, we report results from an investigation of nano-scale size or confinement effects on the
glass transition and viscoelastic properties of physical vapor deposited selenium films. The …