화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.28, No.5, 523-529, May, 2020
DOI10.1007/s13233-020-8069-1  Export Citation
Enhanced Shear Thickening of Silica Colloidal Suspension Using Polystyrene-Polyacrylamide Particles
Hoon Soo Son1, Kyoung Ho Kim1, Eun Ho Lee1, Joo Hyun Song1, 2, Wonjoo Lee2, Bongkuk Seo2, Jun Hyeong Kim3, Kwan Han Yoon3, Young Sil Lee4, †, and Hyun-jong Paik1, †
  • 1Department of Polymer Science and Engineering, Pusan National University, Busan 46241, Korea
  • 2Advanced Industrial Chemistry Research Center, Korea Research Institute of Chemical Technology, Ulsan 44412, Korea
  • 3Department of Chemical Engineering, Kumoh National Institute of Technology, Gumi, 39177, Korea
  • 4Industry-Academic Cooperation, Kumoh National Institute of Technology, Gumi, 39177, Korea
E-mail:,
Shear thickening (ST) refers to a non-Newtonian behavior of concentrated colloidal suspensions, which exhibits significant viscosity increments at high shear stress or high shear rate. A shear thickening fluid (STF) consists of well-dispersed solid particles in a liquid medium. Silica particles are often used as components of STFs due to the abundance of hydroxyl groups on their surfaces. Polystyrene core-polyacrylamide shell particles (PS-PAAm particles) were prepared to enhance the ST of silica particle-based colloidal suspensions. Addition of PS-PAAm particles to various particle weight fractions of silica particle-based STFs resulted in amplification of ST in all instances. These results suggest that PS-PAAm particles enhance inter-particle interactions due to the abundance of hydrogen-bonding donor groups in polyacrylamide.
Keywords:silica colloidal suspension;shear thickening;functionalized polymer particle;surfactant-free emulsion polymerization;rheology
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