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Microencapsulation of Surface-modified Carbon Black by Miniemulsion Polymerization  

Jang, Heang Sin (Department of Chemical Engineering, Inha University)
Hong, Jinho (Department of Chemical Engineering, Inha University)
Lee, Jeongwoo (Department of Chemical Engineering, Inha University)
Shim, Sang Eun (Department of Chemical Engineering, Inha University)
Publication Information
Korean Chemical Engineering Research / v.46, no.4, 2008 , pp. 669-675 More about this Journal
Abstract
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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