Effects of an amphoteric copolymer on the properties of cementitious materials

Yeong Nain Sheen, Chung Da Ho, Wei Hung Weng, Kung Chung Hsu

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The effects of an amphoteric copolymer, poly(acrylamide-co-(2-(3- carboxyacryloyloxy)-N-(carboxymethyl)-N,N-dimethyl-ethanaminium) (PAC) on the properties of cement pastes or mortars were investigated. PAC was prepared from acrylamide and 2-(3-carboxy-acryloyloxy)-N-(carboxymethyl)-N,N- dimethylethanaminium (CAC) through free radical polymerization. The results indicate that the presence of the polymer delayed the setting of cement pastes; it also reduced the water demand so that the resulting mortars showed improved compressive strength and reduced length change. PAC with about 16.7% CAC and a weight-average molecular weight of about 5 × 10 4 was effective in promoting the material properties of mortars.

Original languageEnglish
Pages (from-to)2318-2324
Number of pages7
JournalJournal of Applied Polymer Science
Volume124
Issue number3
DOIs
Publication statusPublished - 2012 May 5

Keywords

  • amphoteric copolymer
  • cement
  • compressive strength
  • length change
  • setting
  • water reduction

ASJC Scopus subject areas

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

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