Conducting poly(N-methylaniline)-coated cross-linked poly(methyl methacrylate) nanoparticle suspension and its steady shear response under electric fields

Moon, Il Jae; Kim, Ha Young; Choi, Hyoung Jin

doi:10.1016/j.colsurfa.2015.05.051

Cited by 11 publications

(8 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The chemically oxidative polymerization was progressed by adding NMA as the monomer and HCl as the oxidant at 0 °C for 24 h. The final product was collected via centrifuge and then dried for 24 h at 55 °C. Figure 1 shows the detailed experimental mechanism from PMMA seeds to PMMA/PNMA microspheres, and more details on the synthesis can be found in the previous report [ 32 ].…”

Section: Methodsmentioning

confidence: 99%

“…Then, the core/shell interaction was enhanced by an epoxy-amine reaction between GMA and oxydianiline (ODA). In our previous experiments, the typical ER performance of a PMMA-PNMA particle-based ER fluid was analyzed using a rotational rheometer in rotation mode [ 32 ]. However, in this experiment, the ER properties of the obtained PMMA-PNMA particles were confirmed using a rotational rheometer in oscillatory mode under various applied electric field strengths.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Core-Shell-Structured Copolyaniline-Coated Polymeric Nanoparticle Suspension and Its Viscoelastic Response under Various Electric Fields

Moon

Choi

2015

Materials

View full text Add to dashboard Cite

Semi-conducting poly(n-methylaniline) (PNMA)-coated poly(methyl methacrylate) (PMMA) composite nanoparticles were synthesized using cross-linked and grafted PMMA particles as a core, and then, the PNMA shell was coated via chemical oxidative polymerization on the surface of modified PMMA nanoparticles. Their electroresponsive electrorheological characteristics when dispersed in silicone were confirmed under applied electric fields using a rotational rheometer, focusing on their viscoelastic response. Using a frequency sweep test, the frequency dependence of both the storage and loss moduli was confirmed to increase upon increasing the electric field, with a stable plateau regime over the entire angular frequency range.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Core-Shell-Structured Copolyaniline-Coated Polymeric Nanoparticle Suspension and Its Viscoelastic Response under Various Electric Fields

Moon

Choi

2015

Materials

View full text Add to dashboard Cite

show abstract

“…Therefore, composites made from PANI derivatives usually have lower electrical conductivities and could be adopted as an ER particle without undergoing a de-doping step, which is, in general, needed for PANI-based ER fluids and will certainly improve the manufacturing effectiveness. Moon et al [77] fabricated poly(N-methylaniline) (PNMA)-coated poly(methyl methacrylate) (PMMA) by a grafting polymerization method. Scheme 4 shows the synthetic route.…”

Section: Polyaniline Derivativesmentioning

confidence: 99%

Nanoparticles Functionalized by Conducting Polymers and Their Electrorheological and Magnetorheological Applications

et al. 2020

Self Cite

View full text Add to dashboard Cite

Conducting polymer-coated nanoparticles used in electrorheological (ER) and magnetorheological (MR) fluids are reviewed along with their fabrication methods, morphologies, thermal properties, sedimentation stabilities, dielectric properties, and ER and MR characteristics under applied electric or magnetic fields. After functionalization of the conducting polymers, the nanoparticles exhibited properties suitable for use as ER materials, and materials in which magnetic particles are used as a core could also be applied as MR materials. The conducting polymers covered in this study included polyaniline and its derivatives, poly(3,4-ethylenedioxythiophene), poly(3-octylthiophene), polypyrrole, and poly(diphenylamine). The modified nanoparticles included polystyrene, poly(methyl methacrylate), silica, titanium dioxide, maghemite, magnetite, and nanoclay. This article reviews many core-shell structured conducting polymer-coated nanoparticles used in ER and MR fluids and is expected to contribute to the understanding and development of ER and MR materials.

show abstract

“…Thereby, it could be directly applied to the ER fluid without further treatment. Moon et al [ 77 ] used a simple method to fabricate a core-shell typed poly(methyl methacrylate)/poly( N -methylaniline) (PMMA-PNMA). Figure 7 shows the synthetic fabrication of the PMMA-PNMA particles.…”

Section: Polymeric Er Materialsmentioning

confidence: 99%

“… Schematic diagram of fabrication of poly(methyl methacrylate)/poly( N -methylaniline) (PMMA–PNMA) core-shell particles, reprinted with permission from [ 77 ]. Copyright Elsevier, 2015.…”

Section: Figures Schemes and Tablementioning

confidence: 99%

Smart and Functional Conducting Polymers: Application to Electrorheological Fluids

Han

Choi

2018

Molecules

View full text Add to dashboard Cite

Electro-responsive smart electrorheological (ER) fluids consist of electrically polarizing organic or inorganic particles and insulating oils in general. In this study, we focus on various conducting polymers of polyaniline and its derivatives and copolymers, along with polypyrrole and poly(ionic liquid), which are adopted as smart and functional materials in ER fluids. Their ER characteristics, including viscoelastic behaviors of shear stress, yield stress, and dynamic moduli, and dielectric properties are expounded and appraised using polarizability measurement, flow curve testing, inductance-capacitance-resistance meter testing, and several rheological equations of state. Furthermore, their potential industrial applications are also covered.

show abstract

Conducting poly(N-methylaniline)-coated cross-linked poly(methyl methacrylate) nanoparticle suspension and its steady shear response under electric fields

Cited by 11 publications

References 39 publications

Core-Shell-Structured Copolyaniline-Coated Polymeric Nanoparticle Suspension and Its Viscoelastic Response under Various Electric Fields

Core-Shell-Structured Copolyaniline-Coated Polymeric Nanoparticle Suspension and Its Viscoelastic Response under Various Electric Fields

Nanoparticles Functionalized by Conducting Polymers and Their Electrorheological and Magnetorheological Applications

Smart and Functional Conducting Polymers: Application to Electrorheological Fluids

Contact Info

Product

Resources

About