Effects of amphoteric copolymer structure on the properties of barium titanate suspensions

Chin Hao Chen, Kung-Chung Hsu

Research output: Contribution to journalArticle

Abstract

The effect of the molecular structure of an amphoteric copolymer, i.e., poly[acrylamide/(ot-N,N-dimethylN-(3-(ß-carboxylate)acrylarnino)propyl) ammonium emanate)] (PAD) on the interactions with BaTiO3 (BT) particles in water and on the stability of BT suspensions was examined by means of adsorption, ζpotential, sedimentation, and viscosity measurements. The results indicate that the adsorption of PAD onto BT particles follows the Langmuir adsorption isotherm. As the added PAD containing greater ionic group fraction, both the saturated amount of adsorbed polymer and the amount of the polymer required to reach the minimal ζ potential decrease. Whatever the ionic group fraction in PAD, BT suspensions become stable and less viscous when saturated amount of the polymer was adsorbed on particle surface.

Original languageEnglish
Pages (from-to)1025-1030
Number of pages6
JournalJournal of Applied Polymer Science
Volume105
Issue number3
DOIs
Publication statusPublished - 2007 Aug 5

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Keywords

  • Adsorption
  • Barium titanate
  • Dispersion
  • Viscosity
  • Water-soluble polymer

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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