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  • 09월 06일 15시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제112회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Modification of Inorganic Oxide Nanoparticles with Organosilanepolyol for Organic-Inorganic Hybrid Materials [우수포스터상]

2013년 8월 27일 11시 06분 04초
IND.P-69 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 16일 (수요일) 16:00~19:00
저자 및
정동의, 한준수, 이광렬1, 유복렬*
한국과학기술연구원(KIST) 물질구조제어연구단, Korea
1고려대학교 화학과, Korea

Organosilanepolyols were obtained in 70-98 % isolated yields as white powders by the hydrolysis reaction of organopolyalkoxysilanes under weak acidic condition. These organoslanepolyols were applied as surface modifiers for inorganic oxide particles such as silica, Zinc oxide, and titania. This process relatively good modified route for hydrophobic inorganic oxide particles by two step reactions: 1) organosilanepolyol interact with hydroxyl group on inorganic oxide particles through strong hydrogen bonding to make thin layered coating on the surface of inorganic oxide particles, 2) then can undergo condensation by heating. When ca. 50 nm silica particles treated with 5 wt % organosilanepolyol, all silica particles were floated on water, indicating that such organosilanepolyols are good surface modifiers for silica particles. This way to modify surface of silica should be applied for preparation of organic-inorganic hybrid materials. When organosilanepolyol-treated silica particles were used for hybrid material (composites) with organic rubber such as styrene butadiene rubber (SBR), the composites exhibit increased bound rubber contents and improved mechanical properties. SEM images of the prepared composites clearly show that organosilanepolyol-modified silica particles are well hybridized with SBR. The results of dynamic mechanical analyzer show that composites prepared with organosilanepolyol-modified silica particles have lower tan δ values at 60 °C and higher tan δ values at 0 °C than a composite obtained by conventional composition process.