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Aggregation of Hydrophobically Modified Polyelectrolytes in Dilute Solution: Ionic Strength Effects

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Macromolecular Complexes in Chemistry and Biology

Abstract

Viscometry and fluorescence spectroscopy are used to study the dilute solution behavior of hydrophobically modified polyelectrolytes. Random copolymers of sodium acrylate and alkylacrylamide are used for this study. The alkylacrylamide content is low, 1–3 mol%, and the length of the alkyl group ranges from octyl to octadecyl. Upon addition of NaCl these copolymers exhibit a transition from a nonaggregated coil to an aggregated one. The transition occurs above a critical salt concentration which is dependent on the length and the content of alkyl groups. This behavior is ascribed to the formation of intrachain hydrophobic aggregates. The copolymer with the shortest alkyl chain (octyl) does not exhibit such aggregation at least in the range of salt concentrations studied, i.e. ≤ 15% NaCl.

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Authors
  1. B. Magny
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  2. I. Iliopoulos
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  3. R. Audebert
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Editor information

Editors and Affiliations

  1. Dept. of Chemistry, Indiana-Purdue University, 402 N. Blackford Street, Indianapolis, IN, 46202-3274, USA

    Paul Dubin

  2. Exxon Research & Engineering Company, Route 22, East, Annandale, NJ, 08801, USA

    J. Bock  & Donald N. Schulz  & 

  3. Dept. of Chemical Engineering, VPI & SU, Blacksburg, VA, 24061, USA

    Richie Davis

  4. Biological Transport Laboratory, School of Engineering and Applied Scence, Washington University, St. Louis, MO, 63130-4899, USA

    Curt Thies

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© 1994 Springer-Verlag Berlin Heidelberg

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Magny, B., Iliopoulos, I., Audebert, R. (1994). Aggregation of Hydrophobically Modified Polyelectrolytes in Dilute Solution: Ionic Strength Effects. In: Dubin, P., Bock, J., Davis, R., Schulz, D.N., Thies, C. (eds) Macromolecular Complexes in Chemistry and Biology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-78469-9_4

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  • DOI: https://doi.org/10.1007/978-3-642-78469-9_4

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-78471-2

  • Online ISBN: 978-3-642-78469-9

  • eBook Packages: Springer Book Archive

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