TY - JOUR
T1 - Dispersion of BaTi4O9 powders in aqueous solutions with PAMCOB copolymer
AU - Chung, Tzu Min
AU - Hsu, Kung Chung
N1 - Funding Information:
The authors are grateful for the support of this work by the National Science Council of the Republic of China (Contract # NSC-98-2221-E-003-019 ). The authors also extend their gratitude to the Academic Paper Editing Clinic, NTNU.
PY - 2012/1
Y1 - 2012/1
N2 - An anionic water-soluble copolymer, i.e., poly(acrylamide-co-4- carboxylamino-4-oxo-2-butenate) (PAMCOB) was used as a novel dispersant for aqueous BaTi4O9 (BT4) slurries. The dispersing property of this copolymer was examined by means of rheology, sedimentation, and leached Ba2+ concentration measurements. The dielectric properties of BT4 compacts were also measured. The results indicated that this copolymer can reduce the viscosity and stabilize the BT4 slurries. Compared to a commercial dispersant, ammonium salt of polymethylacrylic acid (PMAAN), PAMCOB was as effective in preparing stabilized suspensions. More importantly, PAMCOB reduced the leached Ba2+ concentration. Consequently, the BT4 compacts with this polymer showed higher dielectric constant and lower dielectric loss than those without any dispersant present.
AB - An anionic water-soluble copolymer, i.e., poly(acrylamide-co-4- carboxylamino-4-oxo-2-butenate) (PAMCOB) was used as a novel dispersant for aqueous BaTi4O9 (BT4) slurries. The dispersing property of this copolymer was examined by means of rheology, sedimentation, and leached Ba2+ concentration measurements. The dielectric properties of BT4 compacts were also measured. The results indicated that this copolymer can reduce the viscosity and stabilize the BT4 slurries. Compared to a commercial dispersant, ammonium salt of polymethylacrylic acid (PMAAN), PAMCOB was as effective in preparing stabilized suspensions. More importantly, PAMCOB reduced the leached Ba2+ concentration. Consequently, the BT4 compacts with this polymer showed higher dielectric constant and lower dielectric loss than those without any dispersant present.
KW - Anionic polyelectrolytes
KW - BaTiO
KW - Dispersion
KW - Leached barium ions
UR - https://www.scopus.com/pages/publications/82155173533
UR - https://www.scopus.com/pages/publications/82155173533#tab=citedBy
U2 - 10.1016/j.ceramint.2011.07.004
DO - 10.1016/j.ceramint.2011.07.004
M3 - Article
AN - SCOPUS:82155173533
SN - 0272-8842
VL - 38
SP - 283
EP - 288
JO - Ceramics International
JF - Ceramics International
IS - 1
ER -