A water-soluble amphoteric copolymer: Synthesis and its dispersion properties on cement particles

Wei Hung Weng, Kung Chung Hsu*, Yeong Nain Sheen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


A new water-soluble amphoteric copolymer (PAC) was synthesized and evaluated as a dispersion agent for cement particles. PAC was prepared from acrylamide and 2-(3-carboxyacryloyloxy)-N-(carboxymethyl)-N,N-di-methyl ethanaminium (CAC) through free-radical polymerization. The structure of the prepared polymer was verified by the IR spectra. The dispersion properties of PAC were evaluated by the minislump test on cement pastes. The test results indicate that this copolymer could disperse the cement particles and improve the fluidity of the cement pastes. Compared with a commercial superplasticizer, sulfonated naphthalene formaldehyde condensate, PAC showed better dispersion properties. This polymer, with about 16.7% CAC and a weight-average molecular weight of about 1 x 105, was most effective in dispersing cement particles and enhancing the fluidity of the cement pastes. This was attributed to the interaction and adsorption behavior of this admixture with cement particles.

Original languageEnglish
Pages (from-to)1313-1319
Number of pages7
JournalJournal of Applied Polymer Science
Issue number3
Publication statusPublished - 2010 Nov 5


  • Adsorption
  • Dispersions
  • Synthesis
  • Water-soluble polymers

ASJC Scopus subject areas

  • General Chemistry
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry


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