The effect of conformational restrictions on the segmental relaxation dynamics of semicrystalline polymers

Authors

  • Araceli Flores Instituto de Estructura de la Materia, C.S.I.C.
  • Marco Pieruccini

DOI:

https://doi.org/10.1478/C1A1001001

Abstract

A statistical mechanical model is used to describe the effect of restrictions, due to confinement by crystals, on the segmental relaxation dyamics of semicrystalline polymers. It is shown that the emergence of a rearrangement free energy barrier is intrinsically associated with the dynamic heterogeneity observable in relaxation experiments such as those from dielectric spectroscopy. The relaxation behaviour of a number of systems has been considered; the analysis shows that chain orientation has a significant effect on the degree of cooperativity. Moreover, the relaxation features appear to be influenced by the thermodynamic state of the embedding crystalline domains.

Author Biography

  • Marco Pieruccini
    CNR - Istituto per i Processi Chimico-Fisici, Sezione di Messina

Downloads

Published

2010-01-26

Issue

Vol. 88 No. 1 (2010)

Section

Articles

License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Authors who publish with this journal agree to the following terms:
  • Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  • Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  • Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).