Influence of hydrophobe content on the solution rheology of hydrophobically modified terpolymer of SO2, N,N-diallyl-N-carboethoxymethylammonium chloride

Ibnelwaleed A. Hussein, M. Sayem Mozumder, Basel F. Abu Sharkh, Sk Asrof Ali, Raafat Al-Naizy

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Rheological properties of hydrophobically modified copolymer of SO 2, N,N-diallyl-N-carboethoxymethylammonium chloride and the hydrophobic monomer N,N-diallyl-N-octadecylammonium chloride were studied. The influence of hydrophobe content (HP) and polymer concentration was investigated. Polymers with HP content in the range 1.5-5% were examined and the concentration was varied in the range 2-5 wt%. Both dynamic and steady-shear experiments were performed in ARES rheometer. Copolymers were observed to exhibit typical viscoelastic behavior even with low HP content. Both the dynamic viscosity, η′ and storage modulus, G′, increase with the increase of both the polymer concentration and the HP content of the system. The viscosity of the high HP content polymer showed a strong shear dependency, while G′ was a weak function of frequency and gel-like behavior was observed. The zero-shear viscosity, η0, showed a strong concentration dependency (η0 ∼ θα; 1. 1 < α < 5.9). The concentration dependency of η0 suggests that intermolecular association is dominant in the high HP content polymer. Control of the HP content and polymer concentration of this class of polymers can lead to a wide range of interesting rheological properties.

Original languageEnglish
Pages (from-to)2472-2482
Number of pages11
JournalEuropean Polymer Journal
Volume41
Issue number10
DOIs
Publication statusPublished - Oct 2005
Externally publishedYes

Keywords

  • Hydrophobe content
  • Hydrophobically modified polyelectrolytes
  • Intermolecular association
  • Rheology

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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