Physical Aging Behavior of a Glassy Polyether
The present work aims to provide insights on recent findings indicating the presence of multiple equilibration mechanisms in physical aging of glasses. To this aim, we have investigated a glass forming polyether, poly(1-4 cyclohexane di-methanol) (PCDM), by following the evolution of the enthalpic s...
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doaj-bd214b7b3ff34832b84f5a39157e6aaa2021-03-21T00:00:06ZengMDPI AGPolymers2073-43602021-03-011395495410.3390/polym13060954Physical Aging Behavior of a Glassy PolyetherXavier Monnier0Sara Marina1Xabier Lopez de Pariza2Haritz Sardón3Jaime Martin4Daniele Cangialosi5Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, SpainPOLYMAT, University of the Basque Country UPV/EHU, Av. de Tolosa 72, 20018 San Sebastián, SpainPOLYMAT, University of the Basque Country UPV/EHU, Av. de Tolosa 72, 20018 San Sebastián, SpainPOLYMAT, University of the Basque Country UPV/EHU, Av. de Tolosa 72, 20018 San Sebastián, SpainPOLYMAT, University of the Basque Country UPV/EHU, Av. de Tolosa 72, 20018 San Sebastián, SpainDonostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, SpainThe present work aims to provide insights on recent findings indicating the presence of multiple equilibration mechanisms in physical aging of glasses. To this aim, we have investigated a glass forming polyether, poly(1-4 cyclohexane di-methanol) (PCDM), by following the evolution of the enthalpic state during physical aging by fast scanning calorimetry (FSC). The main results of our study indicate that physical aging persists at temperatures way below the glass transition temperature and, in a narrow temperature range, is characterized by a two steps evolution of the enthalpic state. Altogether, our results indicate that the simple old-standing view of physical aging as triggered by the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>α</mi></semantics></math></inline-formula> relaxation does not hold true when aging is carried out deep in the glassy state.https://www.mdpi.com/2073-4360/13/6/954calorimetryphysical agingglasses |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xavier Monnier Sara Marina Xabier Lopez de Pariza Haritz Sardón Jaime Martin Daniele Cangialosi |
spellingShingle |
Xavier Monnier Sara Marina Xabier Lopez de Pariza Haritz Sardón Jaime Martin Daniele Cangialosi Physical Aging Behavior of a Glassy Polyether Polymers calorimetry physical aging glasses |
author_facet |
Xavier Monnier Sara Marina Xabier Lopez de Pariza Haritz Sardón Jaime Martin Daniele Cangialosi |
author_sort |
Xavier Monnier |
title |
Physical Aging Behavior of a Glassy Polyether |
title_short |
Physical Aging Behavior of a Glassy Polyether |
title_full |
Physical Aging Behavior of a Glassy Polyether |
title_fullStr |
Physical Aging Behavior of a Glassy Polyether |
title_full_unstemmed |
Physical Aging Behavior of a Glassy Polyether |
title_sort |
physical aging behavior of a glassy polyether |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2021-03-01 |
description |
The present work aims to provide insights on recent findings indicating the presence of multiple equilibration mechanisms in physical aging of glasses. To this aim, we have investigated a glass forming polyether, poly(1-4 cyclohexane di-methanol) (PCDM), by following the evolution of the enthalpic state during physical aging by fast scanning calorimetry (FSC). The main results of our study indicate that physical aging persists at temperatures way below the glass transition temperature and, in a narrow temperature range, is characterized by a two steps evolution of the enthalpic state. Altogether, our results indicate that the simple old-standing view of physical aging as triggered by the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>α</mi></semantics></math></inline-formula> relaxation does not hold true when aging is carried out deep in the glassy state. |
topic |
calorimetry physical aging glasses |
url |
https://www.mdpi.com/2073-4360/13/6/954 |
work_keys_str_mv |
AT xaviermonnier physicalagingbehaviorofaglassypolyether AT saramarina physicalagingbehaviorofaglassypolyether AT xabierlopezdepariza physicalagingbehaviorofaglassypolyether AT haritzsardon physicalagingbehaviorofaglassypolyether AT jaimemartin physicalagingbehaviorofaglassypolyether AT danielecangialosi physicalagingbehaviorofaglassypolyether |
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1724211356580708352 |