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Synthesis of Hollow Silica Particles from Sodium Silicate using Organic Template Particles
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 Title & Authors
Synthesis of Hollow Silica Particles from Sodium Silicate using Organic Template Particles
Lee, Chongmin; Kim, Jiwoong; Chang, Hankwon; Roh, Ki-Min; Jang, Hee Dong;
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 Abstract
Hollow silica particles were prepared using sodium silicate and organic templates. Polystyrene latex (PSL) particles produced by dispersion polymerization were used as organic templates. PSL particles ranged from to in diameter were synthesized by adjusting the amount of 2,2`-azobisisobutyronitrile (AIBN). The PSL/ core-shell particles were prepared by coating of silica nanoparticles originated from sodium silicate using sol-gel method. The organic templates were removed by the organic solvent, tetrahydrofuran (THF). Morphology of hollow silica particles was investigated with respect to types of the reaction medium and pH during the process. By changing the solvent from ethanol to water, hollow silica particles were successfully formed. Hollow silica particles with the uniform shell thickness were produced at low pH as well. The reflectivity of the as-prepared silica particles was measured in the range of the wavelength of UV and visible light. Hollow silica particles showed much better reflective properties than the commercial light reflector, Insuladd.
 Keywords
Hollow Silica Particles;Sodium Silicate;Organic Template Particles;
 Language
Korean
 Cited by
1.
순차적 마이크로 몰딩 방법을 이용한 이방성 패치 입자 제조 기술,이병진;최창형;김종민;강성민;남진오;진시형;이창수;

폴리머, 2015. vol.39. 5, pp.814-819 crossref(new window)
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