Journal of Applied Polymer Science · 2004 · 13 citations · 10 references
Natural SciencesChemistryMaterials SciencePolymer ChemistryPolymer EngineeringPolymer MaterialsColloidal DispersionsColloidal StabilityGreen Polymer ChemistryRheological Characterization Of SuspensionsDensityDispersant ChemistryDispersant EffectsDispersant PerformanceDispersing AgentsGreen DensityPolymer DispersantsPolymerization Reactions
Abstract An amphibious water‐soluble copolymer, polyacrylamide/(α‐ N,N ‐dimethyl‐ N ‐acryloyloxyethyl) ammonium ethanate (PAAM/DAAE), was synthesized and used as a dispersion agent for BaTiO 3 particles. PAAM/DAAE was prepared from acrylamide and (α‐ N,N ‐dimethyl‐ N ‐acryloyloxyethyl) ammonium ethanate under basic conditions through a free‐radical polymerization. The structure of this copolymer was verified with IR and 1 H‐NMR spectra. The dispersing effects of PAAM/DAAE were examined through the measurement of the viscosity and sedimentation of BaTiO 3 suspensions and the green density. The results indicated that this copolymer could uniformly disperse the particles, reduce the viscosity, stabilize the suspensions, and produce high‐density green compacts. In comparison with a commercial dispersant, the ammonium salt of poly(methylacrylic acid), PAAM/DAAE was clearly more effective. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 2232–2239, 2004
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