Semicrystalline polymers possess a complex morphology comprising both crystalline and amorphous domains. We investigate two representatives from this group, polyvinylidene fluoride and high-density polyethylene, with terahertz time-domain spectroscopy. Intriguingly, the thermal gradient of lattice modes arising from the crystalline phase changes at the glass transition. Thus, terahertz spectroscopy can identify the glass transition temperature even in highly crystalline polymers, where conventional methods such as differential scanning calorimetry fail. Furthermore, these findings provide experimental evidence of the strong interactions between the amorphous and the crystalline domains, as the glass transition is an exclusive feature of the mobile amorphous fraction.
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12 July 2010
Research Article|
July 12 2010
Thermomorphological study of the terahertz lattice modes in polyvinylidene fluoride and high-density polyethylene
Steffen Wietzke;
Steffen Wietzke
a)
1Institut für Hochfrequenztechnik,
Technische Universität Braunschweig
, Schleinitzstraße 22, 38106 Braunschweig, Germany
2Fachbereich Physik,
Philipps-Universität Marburg
, Renthof 5, 35032 Marburg, Germany
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Christian Jansen;
Christian Jansen
1Institut für Hochfrequenztechnik,
Technische Universität Braunschweig
, Schleinitzstraße 22, 38106 Braunschweig, Germany
2Fachbereich Physik,
Philipps-Universität Marburg
, Renthof 5, 35032 Marburg, Germany
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Marco Reuter;
Marco Reuter
2Fachbereich Physik,
Philipps-Universität Marburg
, Renthof 5, 35032 Marburg, Germany
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Tilmann Jung;
Tilmann Jung
2Fachbereich Physik,
Philipps-Universität Marburg
, Renthof 5, 35032 Marburg, Germany
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Judith Hehl;
Judith Hehl
3Fachbereich Chemie,
Philipps-Universität Marburg
, Hans-Meerwein-Straße, 35032 Marburg, Germany
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Dietmar Kraft;
Dietmar Kraft
4Süddeutsches Kunststoff-Zentrum,
SKZ-KFE gGmbH
, Friedrich-Bergius-Ring 22, 97076 Würzburg, Germany
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Sangam Chatterjee;
Sangam Chatterjee
2Fachbereich Physik,
Philipps-Universität Marburg
, Renthof 5, 35032 Marburg, Germany
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Andreas Greiner;
Andreas Greiner
3Fachbereich Chemie,
Philipps-Universität Marburg
, Hans-Meerwein-Straße, 35032 Marburg, Germany
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Martin Koch
Martin Koch
2Fachbereich Physik,
Philipps-Universität Marburg
, Renthof 5, 35032 Marburg, Germany
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a)
Author to whom correspondence should be addressed. Electronic mail: [email protected].
Appl. Phys. Lett. 97, 022901 (2010)
Article history
Received:
May 04 2010
Accepted:
June 15 2010
Citation
Steffen Wietzke, Christian Jansen, Marco Reuter, Tilmann Jung, Judith Hehl, Dietmar Kraft, Sangam Chatterjee, Andreas Greiner, Martin Koch; Thermomorphological study of the terahertz lattice modes in polyvinylidene fluoride and high-density polyethylene. Appl. Phys. Lett. 12 July 2010; 97 (2): 022901. https://doi.org/10.1063/1.3462312
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