Volume 59, Number 3, August 2002
|Page(s)||384 - 390|
|Section||Condensed matter: structure, mechanical and thermal properties|
|Published online||01 September 2002|
Influence of self-assembly on dynamical and viscoelastic properties of telechelic polymer solutions
Department of Materials Science & Engineering,
University of Utah 122 S. Central Campus Drive, Room 304,
Salt Lake City, UT 84112, USA
2 Polymers Division, National Institute of Standards and Technology Gaithersburg, MD 20899, USA
Accepted: 30 April 2002
Incipient micellization in a model self-associating telechelic polymer solution results in a network with a transient elastic response that decays by a two-step relaxation: the first is due to a heterogeneous jump-diffusion process involving entrapment of end-groups within well-defined clusters and this is followed by rapid diffusion to neighboring clusters and a decay (terminal relaxation) due to cluster disintegration. The viscoelastic response of the solution manifests characteristics of both a glass transition and an entangled polymer network.
PACS: 61.25.Hq – Macromolecular and polymer solutions; polymer melts; swelling / 62.10.+s – Mechanical properties of liquids / 62.25.+g – Mechanical properties of nanoscale materials
© EDP Sciences, 2002
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