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2021 Vol.31, Issue 1
Formation Characteristics of Precipitated Calcium Carbonate by Carbonation Process
Chiho Kim
,
Mingwang Seok
,
Yangdo Kim†
Department of Material Science and Engineering, Pusan National University, Busan 46241, Republic of Korea
†Corresponding author E-Mail : yangdo@pusan.ac.kr (Y. Kim, Pusan Nat'l Univ.)
January 2021. pp. 1-7
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Abstract

The characteristics and morphology of precipitated calcium carbonate (PCC) particles produced by carbonation process with various experimental conditions are investigated in this study. The crystal structures of PCC formed by carbonation process are calcite and aragonite. The crystal structure of PCC particles synthesized without adipic acid additive is calcite only, regardless of the reaction temperature. Needle-like shape aragonite phase started to form at reactor temperature of 80°C with the adipic acid additive. Particle size of the single phase calcite PCC synthesized without adipic acid additive is about 1 ~ 3 μm, with homogenous distribution. The aragonite PCC also shows uniform size distribution. The reaction temperature and concentration of adipic acid additive do not show any significant effects on the particle size distribution. Aragonite phase grown to a large aspect ratio of needle-like shape showed relatively improved whiteness. The measured whiteness value of single calcite phase is about 95.95, while that of the mixture of calcite and aragonite is about 99.11.

Keywords
precipitated calcium carbonate
carbonation process
calcite
aragonite
adipic acid
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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 : 31
  • No :1
  • Pages :1-7
  • Received Date : 2020-11-26
  • Revised Date : 2020-12-11
  • Accepted Date : 2020-12-11
  • DOI :https://doi.org/10.3740/MRSK.2021.31.1.1
Journal Informaiton Korean Journal of Materials Research Korean Journal of Materials Research
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