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Synthesis of a Series of PEG-Based ABA Triblock Copolymers and Their Influence on Rheology of Cement Slurries

Pourjavadi, A ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1080/03602559.2014.996901
  3. Publisher: Taylor and Francis Inc , 2015
  4. Abstract:
  5. A series of water-soluble ABA triblock copolymers consisting of a polyethylene glycol central block joined to two blocks of six different homopolymers have been synthesized via simple solvent-free and ecofriendly routes and characterized by FTIR and 1HNMR spectroscopy. Dispersing and slump-retaining abilities of the copolymers in cement slurries were evaluated by mini-slump spread method. Rheological measurements of samples with the best performance were carried out using a rate-controlled coaxial cylinder viscometer. The test results indicate that the dispersing power of the copolymers in cement pastes is strongly affected by the structure and degree of polymerization of the monomers
  6. Keywords:
  7. Plasticizer ; Rheological parameters ; Triblock copolymer ; Block copolymers ; Cements ; Dispersions ; Fourier transform infrared spectroscopy ; Plasticizers ; Polyethylene oxides ; Portland cement ; ABA triblock copolymer ; Cement slurry ; Coaxial cylinders ; Degree of polymerization ; Rheological measurements ; Rheological parameter ; Solvent free ; Spread methods ; Polyethylene glycols
  8. Source: Polymer - Plastics Technology and Engineering ; Volume 54, Issue 11 , 2015 , Pages 1113-1121 ; 03602559 (ISSN)
  9. URL: http://www.tandfonline.com/doi/abs/10.1080/03602559.2014.996901