Synthesis and electrorheology of potato starch phosphate

Park, Dong P.; Sung, Jang Hyun; Kim, Chul Am; Choi, Hyoung Jin

doi:10.1002/app.13288

Cited by 19 publications

(15 citation statements)

References 32 publications

(24 reference statements)

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“…This implies that the arrangement of the particle clusters between the two electrodes has been well tensioned during the motion. The origin of the maximum stress in Figure 4a is regarded to be related with the basic ER mechanism in which ER fluids in general show a reversible transition from a fluid‐like state to a solid‐like state under an applied electric field, thus causing a yield stress following a shear stress increase of the fluid above the yield point 21. Polarized particles behave as electric dipoles, which attract each other to form chains, and the formation of particle chains in the direction of the applied electric field produces the observed rheological changes with enhanced stress.…”

Section: Resultsmentioning

confidence: 99%

Preparation and mechanical characteristics of poly(methylaniline) based electrorheological fluid

Choi

et al. 2005

J of Applied Polymer Sci

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Poly(methylaniline) (PMA) was chemically synthesized and its polymerization was confirmed via an FT-IR. Anhydrous electrorheological (ER) fluid consisting of semiconducting PMA particles dispersed in silicone oil was then prepared, and its mechanical properties such as tensile and compressive stresses were experimentally investigated using a squeeze mode type apparatus that was devised by integrating a motion controller and data acquisition system. The intensity of electric field, electrode velocity, and initial gap were chosen as important test parameters that influence the tensile and compressive characteristics of the ER fluid. The maximum tensile stresses were evaluated at each condition, and a microstructure was also investigated during compressive motion.

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Section: Resultsmentioning

confidence: 99%

Preparation and mechanical characteristics of poly(methylaniline) based electrorheological fluid

Choi

et al. 2005

J of Applied Polymer Sci

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“…In addition, the synthesis and ER properties of composites containing different clay groups (montmorillonite, silica, etc.) were reported in the literature [7,8].…”

Section: Electrorheological Fluidsmentioning

confidence: 97%

Clay/Biopolymer Composite and Electrorheological Properties

Çabuk¹

2016

Clays, Clay Minerals and Ceramic Materials Based on Clay Minerals

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The combination of clays with polymers having different characteristics opens a way to new composite materials showing novel properties. Electrorheological ER fluids show phase transition from a liquid to a solid-like state between the electrodes of a rheometer due to the interactions of polarized particles. Composite systems comprising biodegradable chitosan CS and natural bentonite BNT are important in ER applications. In this study, BNT/CS composites were synthesized by the in situ method. The structure and morphology of the synthesized composites were characterized using X-ray diffraction XRD , thermo-gravimetric analysis TGA , and scanning electron microscopy SEM techniques. Thermal stability was observed to increase with the presence of BNT clay. Conductivity of the composites was found the suitable range for ER measurements. According to ER results, BNT/CS composites were found to be sensitive to external electric field strength, exhibiting a typical shear thinning non-Newtonian viscoelastic behavior.

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“…An additional heat treatment for several hours at 150 • C under vacuum (50-500 Torr) leads to starch phosphates with 0.31-2.1% P and 0.08-0.5% N [339]. In the case of potato starch, the P content of the native material can be increased from 2.04 to 3.07 (DS 0.056) with no change in the granular structure [340]. The reaction conditions strongly influence the properties of the products [341].…”

Section: Phosphatesmentioning

confidence: 99%