화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터)
권호 43권 2호
발표분야 고분자합성
제목 Thermally expandable microcapsule with core-shell structure using colloidal silica as Pickering emulsifier
초록 Pickering emulsion is stabilized by solid particles. Core-shell structure thermally expandable microspheres are prepared by using SPG membrane emulsification and suspension polymerization. The copolymer shells consist of acrylonitrile(AN) and methyl methacrylare(MMA). With aiming to prepare microcapsules having a particle size of 30-50 µm, colloidal silica and poly(vinylpyrrolidone)(PVP) were used as the inorganic Pickering emulsifier and the organic stabilizer, respectively. Suspension polymerization after emulsification of the SPG membrane was carried out to produce uniform particles as compared with the suspension polymerization. In this study, thermally expandable microspheres using the SPG membrane are synthesized with colloidal silica and iso-octane as blowing agents. And the uniformity of the particles according to the size of the SPG membrane was measured. Characterization is used by SEM, TGA, Coulter.
저자 정지영, 소재일, 심상은
소속 인하대
키워드 thermally expandable; microcapsule; Pickering emulsifier; colloidal silica; core-shell
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