치아 연마용 인산일수소칼슘의 합성 및 물리화학적 성질

• 영문명: Synthesis and Physico-Chemical Properties of Dicalcium Phosphate Dihydrate for Dental Abrasive
• 발행기관: 대한약학회
• 저자명: 서성수(Sung Soo Suh) 황성주(Sung Joo Hwang) 이기명(Ki Myung Lee) 이계주(Gye Ju Rhee)
• 간행물 정보: 『약학회지』제37권 제1호 (1993년), 66~75쪽, 전체 10쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 1993.02.28

영문 초록

Dental abrasive, dicalcium phosphate dehydrate (DCPD) was prepared and the several important factors affecting on the quality of toothpaste were investigated by means of set test, glycerine absorption, Coulter counter test, color difference, BET adsorption, mercury porosimetery, and rheogram comparing with two foreign DCPDs, MFO4 and Dentphos K. Sample DCPD was prepared by reaction between 85% H3PO4 and 15% milk of lime at 39 oC (pH 6.5), and stabilized with TSPP and TMP. The physicochemical properties of Sample DCPD were obtained as follows: whiteness (98.99), average particle size (15.5 mcm), pH (7.9), remainder particle weight (0.49 w/w%), glycerine absorption value (64 ml), and set test (passed). N2 adsorption curves (BET) of three kinds of DCPD showed non-porous type III isotherm. BET adsorption parameters of sample DCPD showed that surface area was 4.9m2/g, total pore volume 0.09cm3/g and average pore radius 72.O angstrom. The rheogram of the toothpaste containing each DCPD showed bulged plastic flow with yield value and thixotropic behavior. These results meet standard requirements as abrasive standard, and suggested that synthesized sample DCPD could be used a dental abrasive such as a high quality grade in practice as foreign DCPDs.

키워드

Dental abrasive dicalcium phosphate dihydrate set test glycerine absorption particle size BET adsorption mercury porosimetery rheogram.