Details
| Original language | English |
|---|---|
| Journal | Journal De Physique. IV : JP |
| Volume | 10 |
| Issue number | 7 |
| Publication status | Published - May 2000 |
| Event | International Workshop on Dynamics in Confinement - Grenoble, France Duration: 26 Jan 2000 → 29 Jan 2000 |
Abstract
The molecular dynamics of confined (low molecular weight and polymeric) systems is determined by the counterbalance between surface- and confinement-effects: Due to the interaction with the (inner) surfaces (e.g. the formation of H-bonds, grafting, physisorption) the molecular dynamics is slowed down, resulting in an increase in the glass transition temperature of the system. In contrast the confinement may induce an increase in `free volume' thus making the molecular dynamics faster than in the bulk. This causes a decrease in the glass transition temperature. This counterbalance will be exemplified by employing broadband dielectric spectroscopy (10-2 Hz-109 Hz) to study the molecular dynamics of the low molecular weight liquid ethylene glycol being contained in zeolites of different topology.
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In: Journal De Physique. IV : JP, Vol. 10, No. 7, 05.2000.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Molecular dynamics in confining geometries
AU - Huwe, A.
AU - Kremer, F.
AU - Hartmann, L.
AU - Kratzmüller, Th
AU - Braun, H. G.
AU - Kärger, J.
AU - Behrens, Peter
AU - Schwieger, W.
AU - Ihlein, G.
AU - Weiß, Ö
AU - Schüth, F.
PY - 2000/5
Y1 - 2000/5
N2 - The molecular dynamics of confined (low molecular weight and polymeric) systems is determined by the counterbalance between surface- and confinement-effects: Due to the interaction with the (inner) surfaces (e.g. the formation of H-bonds, grafting, physisorption) the molecular dynamics is slowed down, resulting in an increase in the glass transition temperature of the system. In contrast the confinement may induce an increase in `free volume' thus making the molecular dynamics faster than in the bulk. This causes a decrease in the glass transition temperature. This counterbalance will be exemplified by employing broadband dielectric spectroscopy (10-2 Hz-109 Hz) to study the molecular dynamics of the low molecular weight liquid ethylene glycol being contained in zeolites of different topology.
AB - The molecular dynamics of confined (low molecular weight and polymeric) systems is determined by the counterbalance between surface- and confinement-effects: Due to the interaction with the (inner) surfaces (e.g. the formation of H-bonds, grafting, physisorption) the molecular dynamics is slowed down, resulting in an increase in the glass transition temperature of the system. In contrast the confinement may induce an increase in `free volume' thus making the molecular dynamics faster than in the bulk. This causes a decrease in the glass transition temperature. This counterbalance will be exemplified by employing broadband dielectric spectroscopy (10-2 Hz-109 Hz) to study the molecular dynamics of the low molecular weight liquid ethylene glycol being contained in zeolites of different topology.
UR - http://www.scopus.com/inward/record.url?scp=0342906564&partnerID=8YFLogxK
U2 - 10.1051/jp4:2000711
DO - 10.1051/jp4:2000711
M3 - Conference article
AN - SCOPUS:0342906564
VL - 10
JO - Journal De Physique. IV : JP
JF - Journal De Physique. IV : JP
SN - 1155-4339
IS - 7
T2 - International Workshop on Dynamics in Confinement
Y2 - 26 January 2000 through 29 January 2000
ER -