| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 봄 (04/04 ~ 04/06, 대전컨벤션센터) |
| 권호 |
43권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Poly(HEMA) functionalized polystyrene particles for the colloidal suspension to enhance the shear thickening effect |
| 초록 |
Shear thickening fluid (STF) is a non-Newtonian fluid in which viscosity increases with the shear rate. Shear thickening (ST) effect can occur in a well-dispersed colloidal suspension which usually contains hard particles. The spherical polystyrene nanoparticles with poly(hydroxyethyl methacrylate) shell (PS-PHEMA NPs) were prepared as STF component and the rheological properties of STFs using PS-PHEMA NPs was investigated. PS-PHEMA NPs were synthesized using surfactant-free emulsion polymerization followed by dispersing PS-PHEMA NPs into ethylene glycol, forming STFs. We studied the influence of divinyl benzene (DVB) contents and St/HEMA ratio. It was found that the PS-PHEMA NPs exhibited a strong ST effect indicating the maximum viscosity up to 2800 Pa·s when St/HEMA was 4/1 with 10wt% DVB contents compared to styrene. This consequence implies that the hydroxyl group on the particle surface have a critical influence on the rheological behavior of the colloidal suspensions. |
| 저자 |
손훈수1, 김경호1, 김준형2, 윤관한2, 이영실2, 백현종1
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| 소속 |
1부산대, 2금오공과대 |
| 키워드 |
Surfactant-free emulsion polymerization; Functionalized polymer particle; Shear thickening fluid; Core-shell structure
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| E-Mail |
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