IDEAS home Printed from https://ideas.repec.org/a/eee/phsmap/v221y1995i1p223-232.html
   My bibliography  Save this article

Phase equilibrium and conformation of a polymer in a binary solvent

Author

Listed:
  • Kiwing To,
  • Chan, C.K.
  • Choi, H.J.

Abstract

The phase equilibrium behavior of a dilute high molecular weight polymer (poly-ethylene oxide PEO, molecular weight 9 × 105, concentration 0.001 g/cc) solution in a two-component liquid mixture (isobutyric acid + water, IBAW) is studied experimentally. Far above the critical temperature Tc of IBAW, we found that although PEO dissolved in pure isobutyric acid (IBA) and pure water, mixtures of IBA and water with 0.1% PEO became cloudy within a certain composition range. Far below Tc, when the binary mixture phase separates in two coexisting phases, the presence of PEO which dissolved in both phases did not affect the coexistence curve of the binary mixture. Around Tc, three phases in coexistence were obsrrved in a narrow composition range near the critical composition of IBAW. At high temperature (≈ 24°C above Tc) the size of PEO in IBAW was measured by light scattering method at different IBAW compositions. We observed expansion of PEO molecules in the mixed solvent, which can be explained using the single liquid approximation by Scott. Such an expansion caused the macromolecules to overlap and separate from the solvent.

Suggested Citation

  • Kiwing To, & Chan, C.K. & Choi, H.J., 1995. "Phase equilibrium and conformation of a polymer in a binary solvent," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 221(1), pages 223-232.
    • Handle: RePEc:eee:phsmap:v:221:y:1995:i:1:p:223-232
    DOI: 10.1016/0378-4371(95)00268-C
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/037843719500268C
    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/10.1016/0378-4371(95)00268-C?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.

    References listed on IDEAS

    as
    1. Hunter, Yvonne L. & Watt, Kenneth E.F. & Flory, John E. & Hunter, Peter J. & Mosman, Nancy J., 1976. "The long term implications and constraints of alternate energy policies," Energy, Elsevier, vol. 1(4), pages 375-406.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.

      More about this item

      Statistics

      Access and download statistics

      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:221:y:1995:i:1:p:223-232. 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.

      If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with 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.