Structural relaxation of stacked ultrathin polystyrene films
The Tg depression and kinetic behavior of stacked polystyrene ultrathin films is investigated
by differential scanning calorimetry (DSC) and compared with the behavior of bulk …
by differential scanning calorimetry (DSC) and compared with the behavior of bulk …
Above, below, and in‐between the two glass transitions of ultrathin free‐standing polystyrene films: Thermal expansion coefficient and physical aging
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 …
free‐standing polystyrene films that were interpreted as two thickness‐dependent reduced …
Enthalpy recovery of ultrathin polystyrene film using Flash DSC
Enthalpy recovery for a single polystyrene ultrathin film of 20 nm thickness is studied using
Flash DSC over an extended time and temperature range. Results are compared to a bulk …
Flash DSC over an extended time and temperature range. Results are compared to a bulk …
Physical aging in ultrathin polystyrene films: Evidence of a gradient in dynamics at the free surface and its connection to the glass transition temperature reductions
We have measured the temperature dependence of the physical aging rate β of thick (2430
nm) and thin (29 nm) polystyrene (PS) films supported on silicon using a new streamlined …
nm) and thin (29 nm) polystyrene (PS) films supported on silicon using a new streamlined …
Enthalpy recovery in nanometer to micrometer thick polystyrene films
VM Boucher, D Cangialosi, A Alegría… - Macromolecules, 2012 - ACS Publications
The physical aging of polystyrene (PS) free-standing films has been investigated as a
function of the films thickness, ranging from several micrometers to tens of nanometers. In …
function of the films thickness, ranging from several micrometers to tens of nanometers. In …
Structural recovery of a single polystyrene thin film using Flash DSC at low aging temperatures
The structural recovery of a single polystyrene thin film is studied using Flash differential
scanning calorimetry (DSC) for aging temperatures ranging from 50.5 to 100.5° C and for …
scanning calorimetry (DSC) for aging temperatures ranging from 50.5 to 100.5° C and for …
Slowing down of accelerated structural relaxation in ultrathin polymer films
Q Tang, W Hu, S Napolitano - Physical review letters, 2014 - APS
We demonstrate with molecular simulation that the acceleration of structural relaxation, also
known as physical aging, commonly experimentally observed in thin polymer films slows …
known as physical aging, commonly experimentally observed in thin polymer films slows …
Calorimetric glass transition of single polystyrene ultrathin films
The calorimetric glass transition (T g) is measured for single polystyrene ultrathin films using
a commercial rapid-scanning chip calorimeter as a function of cooling rate and film …
a commercial rapid-scanning chip calorimeter as a function of cooling rate and film …
Calorimetric glass transition temperature and absolute heat capacity of polystyrene ultrathin films
The absolute heat capacity and glass transition temperature (Tg) of unsupported ultrathin
films were measured with differential scanning calorimetry with the step‐scan method in an …
films were measured with differential scanning calorimetry with the step‐scan method in an …
Streamlined ellipsometry procedure for characterizing physical aging rates of thin polymer films
EA Baker, P Rittigstein, JM Torkelson… - Journal of Polymer …, 2009 - Wiley Online Library
Existing studies in the research literature showing conflicting changes in physical aging
rates with decreasing film thickness in nanoconfined polymer films highlight the need for a …
rates with decreasing film thickness in nanoconfined polymer films highlight the need for a …