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

  • B. Magny
  • I. Iliopoulos
  • R. Audebert

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.

Keywords

Intrinsic Viscosity Water Soluble Polymer Specific Viscosity Sodium Acrylate Ionic Strength Condition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1994

Authors and Affiliations

  • B. Magny
  • I. Iliopoulos
  • R. Audebert

There are no affiliations available

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