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Amphibious water‐soluble copolymer. I. Its synthesis and dispersing ability on barium titanate
Author(s) -
Chen LungPin,
Ying KuoLiang,
Hsu KungChung
Publication year - 2004
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.13696
Subject(s) - copolymer , dispersant , polyacrylamide , materials science , barium titanate , dispersion (optics) , acrylamide , viscosity , polymer chemistry , chemical engineering , dispersion polymerization , intrinsic viscosity , titanate , radical polymerization , composite material , polymer , ceramic , physics , optics , engineering
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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