Mechanical properties of dynamically disordered networks

Abraham Nitzan, Rony Granek, Mark A Ratner

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Ionic motion in polymeric ionic conductors has been recently described in the framework of dynamic percolation theory (DPT) or, more generally, dynamic disorder hopping (DDH). In these models the polymer network above the glass transition is modelled as a random bond network in which the random bond distribution evolves in time with rate characteristic to the polymer motion. The present paper deals with the mechanical properties of such networks. We present a simple analysis of the viscosity of such dynamically disordered networks, thus relating a characteristic network relaxation time to the local (microscopic) viscosity of the polymer. If the same time is assumed to govern ionic transport, we obtain a relation between the ionic diffusion rate and the polymer viscosity. Estimates of the ionic diffusion based on this model are consistent with experimental observations.

Original languageEnglish
Pages (from-to)1018-1021
Number of pages4
JournalJournal of Non-Crystalline Solids
Volume131-133
Issue numberPART 2
DOIs
Publication statusPublished - Jun 2 1991

Fingerprint

Polymers
mechanical properties
Mechanical properties
ionic diffusion
Viscosity
polymers
viscosity
Relaxation time
Glass transition
conductors
relaxation time
disorders
glass
estimates

ASJC Scopus subject areas

  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials

Cite this

Mechanical properties of dynamically disordered networks. / Nitzan, Abraham; Granek, Rony; Ratner, Mark A.

In: Journal of Non-Crystalline Solids, Vol. 131-133, No. PART 2, 02.06.1991, p. 1018-1021.

Research output: Contribution to journalArticle

Nitzan, Abraham ; Granek, Rony ; Ratner, Mark A. / Mechanical properties of dynamically disordered networks. In: Journal of Non-Crystalline Solids. 1991 ; Vol. 131-133, No. PART 2. pp. 1018-1021.
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