Applied Chemistry for Engineering, Vol.29, No.4, 425-431, August, 2018
세륨 옥사이드/실리카 복합입자 제조 및 특성분석
Preparation and Characterization of Cerium Oxide/Silica Composite Particles
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초록
UV 및 블루라이트를 차단하는 세륨 옥사이드 나노 입자와 다공성 실리카와의 복합입자를 건식 코팅 공정을 통해 제조하였다. 실리카와 세륨 옥사이드 간 혼합 비율과 메카노 퓨전 장치의 챔버 회전속도 등의 제조 조건을 달리하여 여러 복합입자를 만든 후, 입자 표면 형태를 SEM으로 관측 비교하고 XRF을 통해 복합입자의 조성을 분석하였다. 세륨 옥사이드를 실리카와 함께 복합입자로 만들어 물에 분산시키면 현탁 용액의 투명도가 높아지고 분산 안정성이 향상되었다. 또한 파우더의 유동성과 발림성이 개선되었다. 본 연구를 통해 세륨 옥사이드/실리카 복합입자가 자외선 및 블루라이트를 차단하는 기능성 화장품 소재로 사용 가능함을 확인하였다.
Composite particles of porous silica and cerium oxide nanoparticles blocking UV/blue light were prepared through a dry coating process. Various composite particles were prepared by varying conditions such as the mixing ratio of cerium oxide and silica, and the chamber rotating speed of mechano fusion system. The surface morphology of the composite particles was observed with SEM and the composition was analyzed using X-ray fluorescence (XRF). When the cerium oxide/silica composite particles were dispersed in water, the transparency and dispersion stability of the colloidal solution were improved. In addition, the fluidity and spreadability of the particle powder were enhanced by making composite particles. These results
show that cerium oxide/silica composite particles can be used as functional cosmetic ingredients for UV/blue light protection.
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