Preparation of core–shell structured T-ZnOw/polyaniline composites via graft polymerization

Hierarchical core/shell structured arrays of MnO2@polyaniline nanosheets synthesized on the surface of carbon fiber paper, showed high specific capacitance, high rate capability, and good cycle life.

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A Facile Route to Prepare PMMA/SiO 2 Core‐Shell Particles and PMMA Microcapsules via Sonochemical Graft Polymerization

ChemistrySelect ◽

10.1002/slct.201900426 ◽

2019 ◽

Vol 4 (14) ◽

pp. 4008-4012 ◽

Cited By ~ 2

Author(s):

Sheng‐Wei Guo ◽

Xin Wang ◽

Gu‐Xia Wang ◽

Min Nie

Keyword(s):

Graft Polymerization ◽

Core Shell ◽

Shell Particles ◽

Facile Route

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Core–shell structured poly(2-ethylaniline) coated crosslinked poly(methyl methacrylate) nanoparticles by graft polymerization and their electrorheology

RSC Advances ◽

10.1039/c4ra04799k ◽

2014 ◽

Vol 4 (54) ◽

pp. 28511 ◽

Cited By ~ 23

Author(s):

Ha Young Kim ◽

Hyoung Jin Choi

Keyword(s):

Methyl Methacrylate ◽

Graft Polymerization ◽

Core Shell ◽

Poly Methyl Methacrylate

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Magnetoswitchable Charge Transport and Bioelectrocatalysis Using Maghemite-Au Core-Shell Nanoparticle/Polyaniline Composites

Advanced Materials ◽

10.1002/adma.200602971 ◽

2007 ◽

Vol 19 (18) ◽

pp. 2691-2695 ◽

Cited By ~ 50

Author(s):

M. Riskin ◽

B. Basnar ◽

Y. Huang ◽

I. Willner

Keyword(s):

Charge Transport ◽

Core Shell ◽

Polyaniline Composites

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Self-Assembly and Graft Polymerization Route to Monodispersed Fe3O4@SiO2—Polyaniline Core–Shell Composite Nanoparticles: Physical Properties

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2008.209 ◽

2008 ◽

Vol 8 (11) ◽

pp. 5632-5639 ◽

Cited By ~ 85

Author(s):

Kakarla Raghava Reddy ◽

Kwang-Pill Lee ◽

Ju Young Kim ◽

Youngil Lee

Keyword(s):

Magnetic Nanoparticles ◽

Self Assembly ◽

Magnetic Particles ◽

Graft Polymerization ◽

Photoelectron Spectra ◽

Core Shell ◽

X Ray ◽

Pl Spectra ◽

The Core ◽

Modified Magnetic Nanoparticles

This study describes the synthesis of monodispersed core–shell composites of silica-modified magnetic nanoparticles and conducting polyaniline by self-assembly and graft polymerization. Magnetic ferrite nanoparticles (Fe3O4) were prepared by coprecipitation of Fe+2 and Fe+3 ions in alkaline solution, and then silananized. The silanation of magnetic particles (Fe3O4@SiO2) was carried out using 3-bromopropyltrichlorosilane (BPTS) as the coupling agent. FT-IR spectra indicated the presence of Fe—O—Si chemical bonds in Fe3O4@SiO2. Core–shell type nanocomposites (Fe3O4@SiO2/PANI) were prepared by grafting polyaniline (PANI) on the surface of silanized magnetic particles through surface initiated in-situ chemical oxidative graft polymerization. The nanocomposites were characterized by high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), X-ray photoelectron spectra (XPS), Fourier transform infrared (FTIR) spectra, UV-visible spectroscopy, photoluminescence (PL) spectra, electrical conductivity and magnetic characteristics. HRTEM images of the nanocomposites revealed that the silica-modified magnetic particles made up the core while PANI made up the shell. The XPS spectrum revealed the presence of silica in the composites, and the XRD results showed that the composites were more crystalline than pure PANI. PL spectra show that composites exhibit photoluminescent property. Conductivity of the composites (6.2 to 9.4 × 10−2 S/cm) was higher than that of pristine PANI (3.7 × 10−3 S/cm). The nanocomposites exhibited superparamagnetism. Formation mechanism of the core–shell structured nanocomposites and the effect of modified magnetic nanoparticles on the electro-magnetic properties of the Fe3O4@SiO2/PANI nanocomposites are also investigated. This method provides a new strategy for the generation of multi-functional nanocomposites that composed of other conducting polymers and metal nanoparticles.

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The influence of some factors on the electrical conductivity and particle size of core/shell polystyrene/polyaniline composites

Journal of the Serbian Chemical Society ◽

10.2298/jsc0511263n ◽

2005 ◽

Vol 70 (11) ◽

pp. 1263-1271 ◽

Cited By ~ 1

Author(s):

Gordana Nestorovic ◽

Slobodan Jovanovic ◽

Katarina Jeremic

Keyword(s):

Particle Size ◽

Size Distribution ◽

Oxidative Polymerization ◽

Composite Particles ◽

Core Shell ◽

Chemical Oxidative Polymerization ◽

Electrically Conductive ◽

Pani Composite ◽

Order Of Magnitude ◽

Polyaniline Composites

The electrically conductive, micron-sized, core/shell polystyrene (PS)/polyaniline (PANI) composite particles were synthesized by chemical oxidative polymerization of aniline in the presence of micron-sized PS particles in 1 M HCl. The conditions of the dispersion polymerization of styrene were optimized. The influence of the initiator type employed for the chemical oxidative polymerization of aniline and the aniline (ANI) concentration on the PS/PANI particle size and size distribution and their conductivity was investigated. The obtained results show that the conductivity of the samples increased with increasing ANI concentration. The conductivity of the PS/PANI composite particles obtained with the highest ANI concentration was of the same order of magnitude as that for PANI powder. The particle size did not depend on the concentration of ANI, while the particle size distribution was narrower at higher concentrations of ANI. .

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