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High-performance shear thickening of polystyrene particles with poly(HEMA)
- Authors
- Son, Hoon Soo; Kim, Kyoung Ho; Kim, Jun Hyeong; Yoon, Kwan Han; Lee, Young Sil; Paik, Hyun-jong
- Issue Date
- Sep-2018
- Publisher
- SPRINGER
- Keywords
- Shear thickening; Surfactant-free emulsion polymerization; Functionalized polymer particle; Colloidal suspension
- Citation
- COLLOID AND POLYMER SCIENCE, v.296, no.9, pp.1591 - 1598
- Journal Title
- COLLOID AND POLYMER SCIENCE
- Volume
- 296
- Number
- 9
- Start Page
- 1591
- End Page
- 1598
- ISSN
- 0303-402X
- Abstract
- Spherical polystyrene particles with poly(2-hydroxyethyl methacrylate) shells (PSt-PHEMA particles) were developed as a shear thickening fluid additive. The influence of PSt-PHEMA particle structure on the rheological properties of the shear thickening fluid was investigated. To determine the monomer ratio yielding the most effective shear thickening behavior, PSt-PHEMA particles with different ratios of styrene(St) and 2-hydroxyethyl methacrylate(HEMA) were synthesized using surfactant-free emulsion polymerization followed by dispersion into ethylene glycol to form a shear thickening fluid. The colloidal suspension containing PSt-PHEMA particles made with 4/1 ([St]/[HEMA]) exhibited the strongest shear thickening effect, with a maximum viscosity of 2800 Pa s. Our results suggest that hydroxyl groups and charged groups on the particle surface can strongly influence the rheological behavior of a particle-based shear thickening fluid.
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Related Researcher
- LEE, YOUNG SIL
- College of Engineering (Industry-Academic Co. Fund.)