IDEAS home Printed from https://ideas.repec.org/a/eee/phsmap/v320y2003icp235-248.html
   My bibliography  Save this article

Dynamic macroscopic heterogeneities in a flexible linear polymer melt

Author

Listed:
  • Collin, D.
  • Martinoty, P.

Abstract

This article describes shear-experiments on flexible linear polymer melts (polystyrene) with molecular weights (4,000 and 17,500g/mol) lower than that of critical entanglement. The technique used is a shear piezoelectric rheometer, enabling the complex shear-modulus to be measured in a broad frequency domain (ranging from a few hundredths Hz to some kHz), for weak imposed strains (∼10−4), and for thicknesses between 15 and 100μm. The results obtained show that the behavior of the shear modulus progressively shifts from a liquid-type behavior to a solid-type as sample-thickness decreases from 100 to 15μm. This unexpected change in behavior, which is only observed for strong anchoring conditions of the polymer on the substrate, indicates the presence of macroscopic heterogeneities (elastic clusters). We show that these clusters are associated with the glass transition and suggest that they are due to long-range density-fluctuations which are frozen as a result of their ultra-slow relaxation times and thus display an elastic response.

Suggested Citation

  • Collin, D. & Martinoty, P., 2003. "Dynamic macroscopic heterogeneities in a flexible linear polymer melt," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 320(C), pages 235-248.
    • Handle: RePEc:eee:phsmap:v:320:y:2003:i:c:p:235-248
    DOI: 10.1016/S0378-4371(02)01524-8
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0378437102015248
    Download Restriction: Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000
    File URL: https://libkey.io/10.1016/S0378-4371(02)01524-8?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:phsmap:v:320:y:2003:i:c:p:235-248. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/physica-a-statistical-mechpplications/ .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.