Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Synthesis and Surface Modification of Magnesium Hydroxide by Hydrothermal Method

수열법에 의한 수산화 마그네슘의 합성과 표면개질

  • Lee, Hae-Young (Department of Engineering Chemistry, Chungbuk National University) ;
  • Kang, Kuk-Hyoun (Department of Engineering Chemistry, Chungbuk National University) ;
  • Lee, Dong-Kyu (Department of Engineering Chemistry, Chungbuk National University)
  • 이해용 (충북대학교 공과대학 공업화학과) ;
  • 강국현 (충북대학교 공과대학 공업화학과) ;
  • 이동규 (충북대학교 공과대학 공업화학과)
  • Received : 2012.03.05
  • Accepted : 2012.03.25
  • Published : 2012.03.30
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Abstract

Magnesium hydroxide[$Mg(OH)_2$] was prepared by hydrothermal method using oleic acid as surface modifier. $Mg(OH)_2$ particles exhibit flake morphology with micrometer in size and the surface modification starts from the reaction of $C_{17}H_{33}COO^-$ group, derived from oleic acid molecule in alkaline environments. It is found that hydrothermal treatment conditions such as pH, temperature and reaction time are important for the control of the morphology and properties of surface modified magnesium hydroxide. The obtained magnesium hydroxide groups were characterized by FE-SEM, XRD, FT-IR, TGA. The dispersion in organic solution was determined by sedimentation test and compared with the result of raw $Mg(OH)_2$.

본 연구에서는 올레산을 표면개질제로 사용하여 수열법을 통해 수산화 마그네슘을 합성하였다. 수산화 마그네슘은 알카리 조건에서 올레인산과의 반응을 통해 표면 개질된 마이크로 크기의 플레이크 형상을 갖는다. 수열합성에서 수산화 마그네슘 입자 생성의 조건은 pH, 온도 그리고 반응시간이 표면개질과 입자 형상의 주요 변수임을 확인하였다. 생성된 수산화 마그네슘 입자는 FE-SEM, XRD, FT-IR 그리고 TGA를 통해 확인하였다. 유기 용매 내에서의 분산성의 확인은 개질되지 않은 수산화 마그네슘과의 침전 테스트 비교를 통해 확인하였다.

Keywords

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