Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Preparation of Talc-Silica Composites by Controlling Surface Charge Behavior

표면전하 거동 조절을 이용한 탈크-실리카 복합체의 제조

  • Yun, Ki-Hoon (Department of Industrial Engineering Chemistry, Chungbuk National University) ;
  • Park, Min-Gyeong (Research Institude, Soleon. Co. Ltd) ;
  • Moon, Young-Jin (Research Institude, Soleon. Co. Ltd) ;
  • Lee, Dong-Kyu (Department of Industrial Engineering Chemistry, Chungbuk National University)
  • 윤기훈 (충북대학교 공과대학 공업화학과) ;
  • 박민경 ((주)솔레온 기업부설연구소) ;
  • 문영진 ((주)솔레온 기업부설연구소) ;
  • 이동규 (충북대학교 공과대학 공업화학과)
  • Received : 2017.02.27
  • Accepted : 2017.03.28
  • Published : 2017.03.30
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Abstract

A plate-type inorganic pigment complex was manufactured in a manner that treats the surface of the complex by adjusting zeta potential between talc, an inorganic pigment used as a material for color cosmetics, and hydrophobic silica. Talc, which is usually used in the prescription of color cosmetics, is a plate-type, white-colored inorganic substance with good application and spreadability to skin. Furthermore, it features excellent dispersibility and extensibility as well as outstanding heat tolerance, light stability, and chemical resistance. In general, silica contributes to durable makeup and stabilized formulation. This paper covers a process of manufacturing an inorganic pigment complex, where hydrophobic silica was applied to the surface of talc by using differences in zeta potential after the surface charges of talc and hydrophobic silica had been adjusted with cationic and anionic surfactants, respectively. The resulting inorganic pigment complex was composed of talc whose surface is coated hydrophobic silica to the thickness of $1{\mu}m$ or less, which developed an effective hydrophobic property. Zeta potential was measured to analyze the surface charge of an inorganic pigment, and FT-IR, used to check the functional group of a surfactant, was applied to treat the surface of the pigment. The surface of the inorganic pigment complex was observed employing SEM, EDS, and FIB, while its structure was confirmed with XRD and FT-IR.

색조 화장품 원료로 사용되는 무기안료 탈크와 소수성 실리카의 제타전위 차를 조절하여 표면처리된 판상 무기안료 복합체를 제조하였다. 탈크는 색조 화장품의 처방에서 주로 쓰이는 판상 무기물질로서 피부에 대한 발림성과 퍼짐성을 갖는 백색 안료이다. 또한 분산성과 신장성이 우수하며, 내열성, 내광성, 내화학성 등에 안정하다. 실리카는 일반적인 색조화장품에서 화장의 지속성을 높여주며 제형에서의 안정성을 높여주는 역할을 한다. 본 연구에서는 탈크와 소수성 실리카를 각각 양이온성, 음이온성 계면활성제로 표면전하를 조절한 후 제타전위 차를 이용하여 탈크 표면에 소수성 실리카를 표면처리하여 무기안료 복합체를 제조하였다. 제조된 무기안료 복합체는 소수성 실리카가 탈크 표면 위에 $1{\mu}m$ 이하로 코팅되어 있으며 효과적인 소수성을 띤다. 무기안료의 표면전하 분석을 위해 제타전위를 측정하였고, 계면활성제 표면처리된 안료는 FT-IR 로 계면활성제의 작용기를 확인하였다. 무기안료 복합체의 표면은 SEM, EDS, FIB 등으로 관찰하였으며, XRD, FT-IR 등으로 구조를 확인하였다.

Keywords

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