Suspension rheology of polyaniline coated manganese ferrite particles under electric/magnetic fields

被引：3
作者：
Jeong, Ji Yoon [1 ,2 ]
Kim, Sangwon [1 ,2 ]
Baek, Eunchong [3 ]
You, Chun Yeol [3 ]
Choi, Hyoung Jin [1 ,2 ]
机构：
[1] Inha Univ, Dept Polymer Sci & Engn, Incheon 22212, South Korea
[2] Inha Univ, Program Environm & Polymer Engn, Incheon 22212, South Korea
[3] Daegu Gyeongbuk Inst Sci & Technol, Dept Emerging Mat Sci, Daegu 42988, South Korea
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2023年 / 656卷
基金：
新加坡国家研究基金会;
关键词：
Electrorheological; Magnetorheological; Manganese ferrite; Polyaniline; SMART FLUID; ELECTRORHEOLOGICAL FLUID; CARBONYL IRON; CORE-SHELL; MNFE2O4/POLYANILINE COMPOSITE; MNFE2O4; NANOPARTICLES; GRAPHENE OXIDE; LIGHT; MICROSPHERES; DEGRADATION;
D O I：
10.1016/j.colsurfa.2022.130438
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Manganese ferrite (MnFe2O4) nanoparticles initially fabricated using a solvothermal process were coated with conducting polyaniline (PANI) to produce core/shell-structured MnFe2O4/PANI nanoparticles. An electro/ magnetorheological (E/MR) fluid was prepared by suspending MnFe2O4/PANI particles in silicone oil, and the rheological properties under either electric or magnetic fields were investigated. Scanning electron microscope and transmission electron microscope provided the particle morphology and size information. X-ray diffraction and Fourier transform infrared spectroscopy were used to analyze the crystal structure and chemical composition of the particles. Chain formation in E/MR fluids under electric or magnetic fields was observed by optical microscopy, and the rheological properties were evaluated using a rheometer. Steady shear and dynamic oscillatory tests were conducted to confirm the effective E/MR characteristics while varying the electric/magnetic field strength. The dielectric properties of the particles measured using an LCR meter were analyzed based on the Cole-Cole model. The E/MR fluids composed of MnFe2O4/PANI showed a reversible and fast electro/magnetic response.
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页数：12
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