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13 June 1997 Analysis of the dielectric relaxation during crystallization of glassy polymer PEKK
Zbigniew Dendzik, Zygmunt Gburski
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Proceedings Volume 3181, Dielectric and Related Phenomena: Materials Physico-Chemistry, Spectrometric Investigations, and Applications; (1997) https://doi.org/10.1117/12.276253
Event: Dielectric and Related Phenomena: Materials Physico-Chemistry, Spectrometric Investigations, and Applications, 1996, Szczyrk, Poland
Abstract
The dielectric (alpha) relaxation occurring during isothermal crystallization of a glassy polymer PEKK has been recently measured in real time as crystallization proceeds. We use these new experimental data and the SchOnhals-Schlosser model to interpretation of the dielectric loss line shape of PEKK during crystallization. Once the crystallization proceeds, the values of the intramolecular diffusional hindrance parameter (alpha) , slightly decrease. Relatively fast, internal diffusion along polymer chain becomes a bit more hindered as a result of environmental change creates by crystallization process. Contrary, the intermolecular correlation parameter (kappa) is very sensitive to the crystallization process.
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Zbigniew Dendzik and Zygmunt Gburski "Analysis of the dielectric relaxation during crystallization of glassy polymer PEKK", Proc. SPIE 3181, Dielectric and Related Phenomena: Materials Physico-Chemistry, Spectrometric Investigations, and Applications, (13 June 1997); https://doi.org/10.1117/12.276253
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KEYWORDS
Crystals
Polymers
Dielectric relaxation
Data modeling
Dielectrics
Diffusion
Time metrology
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