Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

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

수산화마그네슘의 합성과 솔비톨계 계면활성제를 이용한 표면개질

  • Kang, Kuk-Hyoun (Department of Engineering Chemistry, Chungbuk National University) ;
  • Hyun, Mi-Ho (Department of Engineering Chemistry, Chungbuk National University) ;
  • Ryu, Kun-Sung (Defense Technology & Quality) ;
  • Lee, Dong-Kyu (Department of Engineering Chemistry, Chungbuk National University)
  • 강국현 (충북대학교 공과대학 공업화학과) ;
  • 현미호 (충북대학교 공과대학 공업화학과) ;
  • 유건성 (국방기술품질원) ;
  • 이동규 (충북대학교 공과대학 공업화학과)
  • Received : 2014.02.10
  • Accepted : 2014.02.25
  • Published : 2014.03.30
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Abstract

Hydrophobic magnesium hydroxide [$Mg(OH)_2$] was modified by hydrothermal method using non-ionic sorbitol surfactant with Span series. Mganesium chloride [$MgCl_2$] and sodium hydroxide [NaOH] were used for synthesis of $Mg(OH)_2$. Also non-ionic surfactant were added as a stabilizer, dispersant and surface modifier. Addition of non-ionic surfactant was favourable to obtain small sized $Mg(OH)_2$ particles with better dispersibility and hydrophobic property of $Mg(OH)_2$ particles. The obtained product were characterized by particle size analysis(PSA), scanning electron microscope(SEM), energy dispersive spectroscopy(EDS), x-ray diffraction(XRD) and fourier transform infrared spectroscopy(FT-IR). The results show that the product are prepared with this method has a well hydrophobic properties and dispersity compared with unmodified $Mg(OH)_2$ particles. The improve properties of surface modified $Mg(OH)_2$ particles were also verified by similarity synthesizing under slightly different conditions.

비이온계면활성제 가운데 솔비톨계 계면활성제인 Span을 이용해 수열합성법으로 수산화마그네슘을 합성하였다. 수산화마그네슘 합성의 전구체는 염화마그네슘과 수산화나트륨을 사용하였다. 비이온 계면활성제는 안정제와 분산제 그리고 표면 개질제로 적용하였다. 비이온 계면활성제를 첨가하였을 경우 수산화마그네슘 입자는 좀 더 작고 균일한 크기와 좋은 분산성을 나타내었으며, 소수성 성질을 나타내었다. 합성된 입자의 특성은 PSA, SEM, EDS, XRD 그리고 FT-IR을 통해 확인하였다. 기기 분석을 통해 개질 전과 후의 수산화마그네슘의 소수성, 분산성 특성을 비교하였다. 또한 실험조건에 따라 수산화마그네슘 입자의 표면 개질 특성 변화를 확인하였다.

Keywords

References

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