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Synthesis, characterization, and electrorheological properties of polyindene/calcium carbonate composites
Author(s) -
Sarikaya Seyma,
Yavuz Mustafa,
Yilmaz Hasim,
Unal H. Ibrahim,
Sari Bekir
Publication year - 2009
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.20590
Subject(s) - materials science , thermogravimetric analysis , composite material , differential scanning calorimetry , calcium carbonate , scanning electron microscope , silicone oil , electrorheological fluid , fourier transform infrared spectroscopy , dynamic light scattering , particle size , chemical engineering , electric field , nanoparticle , physics , quantum mechanics , engineering , thermodynamics , nanotechnology
In this study, synthesis, characterization, and electrorheological (ER) properties of polyindene (PIn) and PIn/calcium carbonate (PIn/CaCO 3 ) conducting composites were carried out by free radical polymerization. In the experiments, FeCl 3 was used as oxidizing agent and the ratio of salt:monomer was 2:1. First, PIn was synthesized and obtained with 70% yield. Then, PIn/CaCO 3 composites containing various amounts of PIn were prepared. PIn and PIn/CaCO 3 composites were characterized by FTIR spectroscopy, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), dynamic light scattering (DLS) methods, Gouy Balance, and dielectric measurements. Suspensions of PIn and PIn/CaCO 3 composites were prepared in silicone oil (SO), at a series of concentrations ( c = 10–25%, m/m) and their sedimentation stabilities were determined. The effects of dispersed particle concentration, particle size, shear rate, external electric field strength, frequency, and temperature onto ER activities of suspensions were investigated. POLYM. COMPOS., 2009. © 2008 Society of Plastics Engineers