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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received April 3, 2008
Accepted April 22, 2008

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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미니유화중합법에 의한 표면개질된 카본블랙의 마이크로캡슐화

Microencapsulation of Surface-modified Carbon Black by Miniemulsion Polymerization

장행신 홍진호 이정우 심상은^†

Heang Sin Jang Jinho Hong Jeongwoo Lee Sang Eun Shim^†

인하대학교 공과대학 화학공학과, 402-751 인천시 남구 용현 4동

Department of Chemical Engineering, Inha University, 253 Yonhyundong, Namgu, Incheon 402-751, Korea

seshim@inha.ac.kr

Korean Chemical Engineering Research, August 2008, 46(4), 669-675(7), NONE Epub 10 September 2008

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Abstract

카본블랙은 토너수지, 잉크 및 복합재료 등에 광범위하게 산업적으로 응용되고 있다. 본 연구에서는 분산 안정성을 증대시키기 위하여 카본블랙을 상 이동 촉매(phase transfer catalyst)를 이용한 상온에서의 산화반응을 통하여 카본블랙(CB)-수산화기(OH)를 제조하여 이에, silane coupling-agent인 p-methylacryloxypropyltrimethoxysilane를 grafting시켜 말단에 이중결합을 가진 구조를 도입하였다. 이렇게 표면개질된 카본블랙을 미니유화중합법을 이용하여 고분자로 캡슐화를 진행하였다. 이러한 과정을 통하여 평균직경 100~500 nm 크기의 하이브리드 미립자를 제조하였다. 중합과정에 있어서 카본블랙의 표면 개질의 영향, 모노머의 종류, 개시제 및 유화제의 캡슐화 반응에 미치는 영향을 연구하였다.

Carbon black has been widely used in composites, tonor resin, and ink materials. Since carbon black readily agglomerates, it is important to disperse carbon black in real applications. Aiming to improve dispersion stability, carbon black was chemically oxidized to possess hydroxyl groups using a phase transfer catalyst at room temperature. The modified carbon black (CB-OH) was grafted by a silane coupling agent, p-methylacryloxypropyltrimethoxysilane, to carry teminal vinyl groups. The modified carbon black was subsequently used in miniemulsion polymerization to achieve encapsulted core-shell structure. Finally, well-encapsulated carbon black by polymer was obtained in the size range of 100-500 nm. Throughout the polymerization, the effects of surface modification, types of monomers, initiators, and emulsifiers were investigated.

Keywords

Carbon Black Surface Modification Miniemulsion Polymerization Phase Transfer Catalyst Microencapsulation

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