DISPERSION STABILITY AND RHEOLOGICAL BEHAVIOR OF SUSPENSIONS OF POLYSTYRENE COATED FUMED SILICA PARTICLES IN POLYSTYRENE SOLUTIONS

Xian-ze Yin; Ye-qiang Tan; Yi-hu Song; Qiang Zheng

doi:10.1007/s10118-012-1099-1

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DISPERSION STABILITY AND RHEOLOGICAL BEHAVIOR OF SUSPENSIONS OF POLYSTYRENE COATED FUMED SILICA PARTICLES IN POLYSTYRENE SOLUTIONS

Paper | Updated：2023-01-03

- DISPERSION STABILITY AND RHEOLOGICAL BEHAVIOR OF SUSPENSIONS OF POLYSTYRENE COATED FUMED SILICA PARTICLES IN POLYSTYRENE SOLUTIONS
- Chinese Journal of Polymer Science Vol. 30, Issue 1, Pages: 26-35(2012)
- Affiliations：
  
  a.Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education, Zhejiang University, Hangzhou 310027, China
  b.Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Author bio：
  
  **Yi-hu Song (宋义虎), E-mail: s_yh0411@zju.edu.cn
- Funds：
- DOI：10.1007/s10118-012-1099-1
  CLC：
- Received：18 January 2011，
  
  Revised：2011-03-02，
  
  Accepted：28 March 2011，
  
  Published：2012-01
- Accepted：
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Xian-ze Yin, Ye-qiang Tan, Yi-hu Song, et al. DISPERSION STABILITY AND RHEOLOGICAL BEHAVIOR OF SUSPENSIONS OF POLYSTYRENE COATED FUMED SILICA PARTICLES IN POLYSTYRENE SOLUTIONS[J]. Chinese Journal of Polymer Science, 2012, 30(1): 26-35.
DOI：

Xian-ze Yin, Ye-qiang Tan, Yi-hu Song, et al. DISPERSION STABILITY AND RHEOLOGICAL BEHAVIOR OF SUSPENSIONS OF POLYSTYRENE COATED FUMED SILICA PARTICLES IN POLYSTYRENE SOLUTIONS[J]. Chinese Journal of Polymer Science, 2012, 30(1): 26-35. DOI： 10.1007/s10118-012-1099-1.

摘要

Abstract

Polystyrene coated silica (SiO

@PS) core-shell composite particles with averaged diameter of about 290 nm were prepared by

in situ

emulsion polymerization of styrene on the surface of g-methacryloxypropyltrimethoxysilane grafted SiO

nanoparticles of 20-50 nm in diameter. Rheological behavior and dispersion stability of SiO

@PS suspension in 10 wt% PS solution were compared with suspensions of untreated SiO

and silane modified SiO

nanoparticles. Suspensions of the untreated and the silane modified SiO

exhibited obvious shear thinning. The SiO

@PS suspension exhibits shear viscosity considerably smaller than suspensions of untreated and silane modified SiO

at low shear rates. Transmission electron microscopy showed that the composite particles can uniformly and stably disperse in PS solution compared to other suspensions

implying that the PS shell can effectively enhance the particle compatibility with PS macromolecules in solution.

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