Issue 2, 2009
From the journal:

Soft Matter

Competitive hydrogen-bonding in polymer solutions with mixed solvents

Ravi Shankar,†ab   Rebecca R. Klossner,ac   Juan T. Weaver,d   Tsuyoshi Koga,f   John H. van Zanten,d   Wendy E. Krause,*c   Coray M. Colina,e   Fumihiko Tanaka*f  and  Richard J. Spontakbd  

* Corresponding authors

a Fiber & Polymer Science Program, North Carolina State University, Raleigh, NC, USA

b Department of Materials Science & Engineering, North Carolina State University, Raleigh, NC, USA

c Department of Textile Engineering, Chemistry & Science, North Carolina State University, Raleigh, NC, USA

d Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA

e Department of Materials Science & Engineering, Pennsylvania State University, University Park, PA, USA

f Department of Polymer Chemistry, Kyoto University, Kyoto, Japan

Abstract

Poly(ethylene oxide) (PEO) coil size is investigated in a binary mixture of solvent molecules capable of cooperatively hydrogen-bonding with each other, as well as with the PEO chains. Viscometry reveals a minimum in zero shear rate solution viscosity at a molar ratio of ∼2:1 water:methanol. This viscosity coincides with a minimum in PEO gyration radius and occurs near the conditions where water/methanol mixtures deviate most markedly from ideal solution behavior. A minimum in polymer mean square end-to-end distance is predicted for polymer solutions composed of two hydrogen-bonding solvents.

Graphical abstract: Competitive hydrogen-bonding in polymer solutions with mixed solvents

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Article information

DOI
https://doi.org/10.1039/B808479C
Article type
Communication
Submitted
03 Jun 2008
Accepted
30 Oct 2008
First published
12 Nov 2008

Soft Matter, 2009,5, 304-307

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Competitive hydrogen-bonding in polymer solutions with mixed solvents

R. Shankar, R. R. Klossner, J. T. Weaver, T. Koga, J. H. van Zanten, W. E. Krause, C. M. Colina, F. Tanaka and R. J. Spontak, Soft Matter, 2009, 5, 304 DOI: 10.1039/B808479C

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