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2018 Vol.28, Issue 2 Preview Page
Enhanced Dispersion of Yttria Stabilized Zirconia by Mixed Dispersants Containing Carboxyl Group in Aqueous System

수성 현탁액에서 카르복실기를 포함하는 혼합 분산제에 의한 이트리아 안정화 지르코니아의 분산성 향상

Soo-Hyun Kim1
,
Jong-Bong Kang2
,
Sung-Hwan Bae2†
김 수현1
,
강 종봉2
,
배 성환2†
1Department of Mechatronics Engineering, Kyungnam University, 7 Kyungnamdaehak-ro, Masanhappo-gu, Changwon-si 51767, Republic of Korea
2Department of Nano Science and Engineering, Kyungnam University, 7 Kyungnamdaehak-ro, Masanhappo-gu, Changwon-si 51767, Republic of Korea
1경남대학교 메카트로닉스공학과
2경남대학교 나노신소재공학과
†Corresponding author : shbae@kyungnam.ac.kr (S.-H. Bae, Kyungnam Univ.)
February 2018. pp. 82-88
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Abstract

Stable slurries of YSZ in aqueous suspension with added polymer dispersants, namely, poly-methacrylic acid ammonium salt (PMMA), poly-acrylic acid (PAA) and poly-acrylic-co-maleic acid (PAMA), were mixed with the monomolecular dispersants citric acid and oxalic acid. The dispersion properties of the suspension were investigated using PSA, viscosity, sedimentation, and FT-IR. The polymer dispersants and monomolecular dispersants were attached to the YSZ surface by the carboxylic group, as shown by the FTIR results. A stabilized aqueous suspension was obtained when the polymer dispersant and citric acid were mixed and compared to the use of citric acid alone as a dispersant agent. When the polymer dispersant and citric acid were mixed and milled through attrition milling, there was a smaller particle size compared to when the polymer dispersant alone was used as a dispersant agent. This study determined that the particle size of the mixed dispersant was affected by the properties of the monomolecular dispersant and that the stability of the suspension was affected by the polymer dispersant. However, when slurries of YSZ were mixed with oxalic acid, the particle bridging behavior was the result of the high degree of viscosity and the small sedimentation height.

Keywords
YSZ
suspension
dispersant
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Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 28
  • No :2
  • Pages :82-88
  • Received Date : 2017-11-14
  • Revised Date : 2017-12-07
  • Accepted Date : 2017-12-07
  • DOI :https://doi.org/10.3740/MRSK.2018.28.2.82
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