Electrorheological properties of kaolinite, polyindole, and polyindole/kaolinite composite suspensions | Zendy

Arslan Yasin | Zendy; Ibrahim Unal Halil | Zendy; Yilmaz Hasim | Zendy; Sari Bekir | Zendy

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Electrorheological properties of kaolinite, polyindole, and polyindole/kaolinite composite suspensions

Author(s) -

Arslan Yasin,

Ibrahim Unal Halil,

Yilmaz Hasim,

Sari Bekir

Publication year - 2007

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.26197

Subject(s) - materials science , composite number , silicone oil , electrorheological fluid , kaolinite , dynamic light scattering , polymerization , composite material , shear rate , polymer chemistry , polymer , rheology , nanoparticle , nanotechnology , electric field , physics , quantum mechanics , metallurgy

In this study, polyindole (PIN) and polyindole/kaolinite (PIN/KAO) composite were synthesized by free radical polymerization using FeCl 3 as an initiator. Average particle sizes ( d 50 ) of PIN and PIN/KAO composite were determined by dynamic light scattering (DLS) as 7.2 and 6.2 μm, respectively. The samples were characterized by FTIR, elemental analysis, DSC/TGA and SEM measurements. Suspensions of KAO, PIN, and PIN/KAO composite were prepared in silicone oil (SO) and the sedimentation stabilities were determined. Electrorheological (ER) properties of these suspensions were studied as a function of dispersed phase concentration, shear rate, shear stress, and temperature; and yield stresses and excess shear stresses determined. Further, dielectric properties of KAO, PIN, and PIN/KAO composite were investigated. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007

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