지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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Precipitated calcium carbonate(PCC), particularly calcite crystal, is extensively used as a pigment, filler or extender in various industries such as paper, paint, textile, detergents, adhesives, rubber and plastics, food, cosmetics, and biomaterials. PCC is conventionally produced through the gas-liquid carbonation process, which consists on bubbling gaseous CO<sub>2</sub> through a concentrated calcium hydroxide slurry. This study is aimed to find some factors for controlling the morphology of engineered PCC in lab-scaled mixing batch. The experimental designs were based on temperature variables, Ca(OH)<sub>2</sub> concentration, CO<sub>2</sub> flow rate, and electrical conductivity. The model of engineered PCC morphology was finally controlled by adjustment of electrical conductivity(6.0∼7.0 mS/cm) and Ca(OH)<sub>2</sub> concentration(10 g/L).
Orthorhombic calcite crystals were mostly created at high concentration and electrical conductivity conditions because the increased ratio of Ca<sup>2+</sup> and CO<sub>3</sub><sup>2-</sup> ions affects the growth rate of orthorhombic faces. Excess calcium spices were contributed to the growth of faces in calcium carbonate crystal, and the non-stoichiometric reaction was occurred between Ca<sup>2+</sup> and CO<sub>3</sub><sup>2-</sup> ions during carbonation process.
Orthorhombic calcite crystals were mostly created at high concentration and electrical conductivity conditions because the increased ratio of Ca<sup>2+</sup> and CO<sub>3</sub><sup>2-</sup> ions affects the growth rate of orthorhombic faces. Excess calcium spices were contributed to the growth of faces in calcium carbonate crystal, and the non-stoichiometric reaction was occurred between Ca<sup>2+</sup> and CO<sub>3</sub><sup>2-</sup> ions during carbonation process.
목차
Abstract
1. 서론
2. 재료 및 방법
3. 결과 및 고찰
4. 결론
사사
인용문헌
참고문헌 (14)
참고문헌 신청
1. [단행본] - Neimo. L / 1999 / Papermaking Chemistry, Vol. 4 / TAPPI Press : 117 ~ 121
3. [학술지(정기간행물)] - Han. Y. R / 1997 / Effect of particle shape and size calcium carbonate on physical properties of paper / Journal of Korea TAPPI 29 (1) : 7 ~ 12
4. [학술지(정기간행물)] - 황정우 / 2009 / 기포탑 반응기에서 반응 속도에 따른 침강성 탄산칼슘의 모폴로지 변화 / Korean Chemical Engineering Research(HWAHAK KONGHAK) 47 (6) : 727 ~ 733
5. [학술지(정기간행물)] - J. G. Carmona / 2004 / The mechanism of precipitation of chain-like calcite / H. of Crystal Growth 262 : 479 ~ 489
6. [학술지(정기간행물)] - 이재욱 / 2007 / 침강성 탄산칼슘 제조기술의 특허 동향분석 / 한국지구시스템공학회지 44 (6) : 562 ~ 571
3. [학술지(정기간행물)] - Han. Y. R / 1997 / Effect of particle shape and size calcium carbonate on physical properties of paper / Journal of Korea TAPPI 29 (1) : 7 ~ 12
4. [학술지(정기간행물)] - 황정우 / 2009 / 기포탑 반응기에서 반응 속도에 따른 침강성 탄산칼슘의 모폴로지 변화 / Korean Chemical Engineering Research(HWAHAK KONGHAK) 47 (6) : 727 ~ 733
5. [학술지(정기간행물)] - J. G. Carmona / 2004 / The mechanism of precipitation of chain-like calcite / H. of Crystal Growth 262 : 479 ~ 489
6. [학술지(정기간행물)] - 이재욱 / 2007 / 침강성 탄산칼슘 제조기술의 특허 동향분석 / 한국지구시스템공학회지 44 (6) : 562 ~ 571
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UCI(KEPA) : I410-ECN-0101-2013-586-000744381