Electrorheological Performance of Chitosan Phosphate Suspension

Choi, Ung-su; Ko, Young Tae; Kim, Jae-Yong

doi:10.1295/polymj.32.501

Cited by 15 publications

(8 citation statements)

References 14 publications

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“…Therefore, it is possible to modify a material's polarization properties by the adjustment of the synthetic procedure so that an ER material having a desired composition is produced. The ER properties of biocompatible chitosan (CTS)7, 8 and CTS derivatives9–14 as disperse phases have been investigated. Crosslinked CTS has better thermal stability and mechanical properties than CTS,15, 16 and this is advantageous in practical applications.…”

Section: Introductionmentioning

confidence: 99%

Crosslinked chitosan doped with Y₂(CO₃)₃ and surface energy and electrorheological properties

Jia

Shang

et al. 2007

J of Applied Polymer Sci

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Novel electrorheological materials based on crosslinked chitosan doped with Y 2 (CO 3 ) 3 were synthesized with biocompatible chitosan as the substrate of the materials. The electrorheological performance, surface energy, and thermal decomposition behavior of the materials were investigated as functions of the composition change. The results show that doping Y 2 (CO 3 ) 3 can improve effectively the electrorheological performance of crosslinked chitosan with the formation of a metal-polymer complex when the doping degree is suitable. The surface energy plays an important role in influencing the electrorheological properties of the material.

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Section: Introductionmentioning

confidence: 99%

Crosslinked chitosan doped with Y₂(CO₃)₃ and surface energy and electrorheological properties

Jia

Shang

et al. 2007

J of Applied Polymer Sci

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“…Similarly, Choi et al . reported in their two different studies that τ E inceased with increasing φ for cellulose phosphate ester/SO suspensions18 but, τ E first increased upto a critical φ and then slightly decreased for chitosan phosphate/SO system 19…”

Section: Resultsmentioning

confidence: 92%

Polyindene/organo‐montmorillonite conducting nanocomposites. II. electrorheological properties

Guzel

Erol

Ünal

2011

J of Applied Polymer Sci

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In this study, polyindene (PIn) and three PIn/organo-montmorillonite (O-MMT) nanocomposites namely K1: [PIn(94.5%)/O-MMT(5.5%)], K2: [PIn(92.8%)/ O-MMT(7.2%)], and K3: [PIn(87.9%)/O-MMT(12.1%)] were used to investigate the electrorheological (ER), creep-recovery, and vibration damping characteristics. A volume fraction series (u ¼ 5-25%) of suspensions were prepared from the samples in silicone oil (SO). First, zeta (f)-potentials and antisedimentation stabilities; second, ER properties of these nanocomposite/SO suspension systems were determined under externally applied electric field strengths. Besides, the effects of dispersed phase volume fraction, shear rate, electric field strength, and temperature onto ER performance of these suspensions were investigated and non-Newtonian rheological behaviors were observed. The vibration damping capabilities of the suspensions were investigated using various rheological parameters on the electrorheometer and on an automobile shock absorber and a 66% vibration damping capacity were determined under an applied electric field strength, which is an important property from industrial point of view. Furthermore, the materials were subjected to creep and creeprecovery tests and reversible viscoelastic deformations were determined. From the experiments carried out, the nanocomposites were classified as smart materials.

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“…On the other hand, when the effect of particle volume fraction on ER efficiency was examined just for the K1/SO system, the ER efficiency increased with rising particle volume fraction up to φ = 20% and then leveled off; 34 thus for the rest of the ER measurements this volume fraction was used.…”

Section: Resultsmentioning

confidence: 99%

Electrorheological properties of polyaniline/K-feldspar conducting composite

Erol

Karakışla

Ünal

et al. 2012

Journal of Composite Materials

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In this study, synthesis of conducting polyaniline (PAn)/potassium-feldspar (K-feldspar) composites, having various amounts of PAn, was carried out using (NH4)2S2O8 as oxidizing agent. The conducting composites were characterized by a series of techniques namely: Fourier transform–infrared, X-ray diffraction, scanning electron microscopy, thermogravimetry analysis, two-probe conductivity, magnetic susceptibility, and particle size measurements. For electrorheological (ER) measurements, the conductivities of the composites were reduced by a dedoping process. A series of suspensions were prepared in silicone oil, having various volume fractions, and then subjected to colloidal stability, flow rate, ER and creep-recovery tests. Enhancement in the electric field-induced viscosities and shear thinning non-Newtonian viscoelastic behavior was observed for all the composite materials studied. Recoverable viscoelastic deformations were detected from the creep and creep-recovery tests under externally applied electric field thus; they were classified as smart materials.

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Electrorheological Performance of Chitosan Phosphate Suspension

Cited by 15 publications

References 14 publications

Crosslinked chitosan doped with Y₂(CO₃)₃ and surface energy and electrorheological properties

Crosslinked chitosan doped with Y₂(CO₃)₃ and surface energy and electrorheological properties

Polyindene/organo‐montmorillonite conducting nanocomposites. II. electrorheological properties

Electrorheological properties of polyaniline/K-feldspar conducting composite

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Electrorheological Performance of Chitosan Phosphate Suspension

Cited by 15 publications

References 14 publications

Crosslinked chitosan doped with Y2(CO3)3 and surface energy and electrorheological properties

Crosslinked chitosan doped with Y2(CO3)3 and surface energy and electrorheological properties

Polyindene/organo‐montmorillonite conducting nanocomposites. II. electrorheological properties

Electrorheological properties of polyaniline/K-feldspar conducting composite

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Product

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Crosslinked chitosan doped with Y₂(CO₃)₃ and surface energy and electrorheological properties

Crosslinked chitosan doped with Y₂(CO₃)₃ and surface energy and electrorheological properties