황산바륨의 합성조건과 유동학적 특성

• 영문명: Synthetic Conditions and Rheological Characteristics of Barium Sulfate
• 발행기관: 대한약학회
• 저자명: 신화우(Wha Woo Shin) 김준희(Jun Hea Kim) 최광식(Kwang Sik Choi) 장영수(Young Soo Chang) 이광표(Kwang Pyo Lee)
• 간행물 정보: 『약학회지』제36권 제6호 (1992년), 538~547쪽, 전체 10쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 1992.12.29

영문 초록

Optimal synthetic condition of barium sulfate were investigated from the viewpoint of yield and bulkiness according to a randomized complete block design proposed by G.E.P. Box and K.B. Wilson. Barium chloride and magnesium sulfate were utilized as reactants in order to prepare barium sulfate in this study. It was found that optimum temperature range of reactant solutions was 60~100oC and the optimum concentration range of the reactant solutions was 10~17.3% and 10~20% respectively, on the viewpoint of yield and bulkiness. The optimum mole ratio of BaCl2 to MgSO4 was in the range of 1.50~2.0 and the optimum mole ratio of BaCl2 to MgSO4 was in the range of 1.50~2.0 and the optimum reacting time range was 15~20 minutes. The optimum drying temperature range was 110~130oC from the viewpoint of yield, but it was 90~110oC on the basis of bulkiness. Apparent viscosity of barium sulfate suspensions dispersed in various concentrations of Na. CMC was measured by using Brookfield synchrolectric viscometer model LVT, the relative equation, log etasp = A + B.phi was examined and the equation was found to agree fairly well. 1 w/v% Na. CMC aqueous solution and 0.1 volume fraction of BaSO4 powder were optimum in the preparation of BaSO4 suspension showing highest viscosity at infinite shearing.