Glass transition of polymers in bulk, confined geometries, and near interfaces

S Napolitano, E Glynos, NB Tito - Reports on Progress in Physics, 2017 - iopscience.iop.org
When cooled or pressurized, polymer melts exhibit a tremendous reduction in molecular
mobility. If the process is performed at a constant rate, the structural relaxation time of the …

Physical aging in polymers and polymer nanocomposites: recent results and open questions

D Cangialosi, VM Boucher, A Alegría, J Colmenero - Soft Matter, 2013 - pubs.rsc.org
Physical aging is a ubiquitous phenomenon in glassy materials and originates from the fact
that they are generally out-of-equilibrium. Due to the technological and fundamental …

Irreversible adsorption of polymer melts and nanoconfinement effects

S Napolitano - Soft Matter, 2020 - pubs.rsc.org
For almost a decade, growing experimental evidence has revealed a strong correlation
between the properties of nanoconfined polymers and the number of chains irreversibly …

Glassy dynamics of soft matter under 1D confinement: How irreversible adsorption affects molecular packing, mobility gradients and orientational polarization in thin …

S Napolitano, S Capponi, B Vanroy - The European Physical Journal E, 2013 - Springer
The structural dynamics of polymers and simple liquids confined at the nanometer scale has
been intensively investigated in the last two decades in order to test the validity of theories …

Effect of nanostructure on the thermal glass transition and physical aging in polymer materials

D Cangialosi, A Alegria, J Colmenero - Progress in Polymer Science, 2016 - Elsevier
We review the recent activity aiming to clarify glassy dynamics in nanostructured polymer
glasses, in particular thin films, nanocomposites and nanospheres. Special emphasis is …

Facile hydroxylation of halloysite nanotubes for epoxy nanocomposite applications

S Zeng, C Reyes, J Liu, PA Rodgers, SH Wentworth… - Polymer, 2014 - Elsevier
Polymer nanocomposites have been extensively investigated over the past two decades,
resulting in a wide range of applications because of their excellent performance. Halloysite …

T g depression and invariant segmental dynamics in polystyrene thin films

VM Boucher, D Cangialosi, H Yin, A Schönhals… - Soft Matter, 2012 - pubs.rsc.org
We investigate the segmental dynamics and glass transition temperature (Tg) of polystyrene
(PS) thin films. The former is investigated by alternating current (AC) calorimetry and …

On the equivalence between the thermodynamic and dynamic measurements of the glass transition in confined polymers

RD Priestley, D Cangialosi, S Napolitano - Journal of non-crystalline solids, 2015 - Elsevier
Understanding why the glass transition temperature (T g) of polymers deviates substantially
from the bulk with nanoscale confinement has been a 20-year mystery. Ever since the …

Interfaces features in polymer nanocomposites: A review of proposed models

D Pitsa, MG Danikas - Nano, 2011 - World Scientific
Different properties and phenomena that polymer nanocomposites exhibit compared to the
base polymers or conventional polymers (polymers with micron scale particles) are …

Interfacial interactions and segmental dynamics of poly (vinyl acetate)/silica nanocomposites

Y Lin, L Liu, G Xu, D Zhang, A Guan… - The Journal of Physical …, 2015 - ACS Publications
We investigate the interfacial interactions and segmental dynamics of hydrophilic and
hydrophobic (calcined) silica nanoparticle (NP) filled poly (vinyl acetate)(PVAc) composites …