scholarly journals Novel Nanocomposites Based on Functionalized Magnetic Nanoparticles and Polyacrylamide: Preparation and Complex Characterization

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1384 ◽  
Author(s):  
Eugenia Tanasa ◽  
Catalin Zaharia ◽  
Ionut-Cristian Radu ◽  
Vasile-Adrian Surdu ◽  
Bogdan Stefan Vasile ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Magnetite Nanoparticles ◽  
Xps Spectra ◽  
Rheological Analysis ◽  
Nanocomposite Hydrogels ◽  
Selected Area Electron Diffraction ◽  
Functionalized Magnetic Nanoparticles ◽  
Soft Tissue Engineering ◽  
Complex Characterization

This paper reports the synthesis and complex characterization of nanocomposite hydrogels based on polyacrylamide and functionalized magnetite nanoparticles. Magnetic nanoparticles were functionalized with double bonds by 3-trimethoxysilyl propyl methacrylate. Nanocomposite hydrogels were prepared by radical polymerization of acrylamide monomer and double bond modified magnetite nanoparticles. XPS spectra for magnetite and modified magnetite were recorded to evaluate the covalent bonding of silane modifying agent. Swelling measurements in saline solution were performed to evaluate the behavior of these hydrogels having various compositions. Mechanical properties were evaluated by dynamic rheological analysis for elastic modulus and vibrating sample magnetometry was used to investigate the magnetic properties. Morphology, geometrical evaluation (size and shape) of nanostructural characteristics and the crystalline structure of the samples were investigated by SEM, HR-TEM and selected area electron diffraction (SAED). The nanocomposite hydrogels will be further tested for the soft tissue engineering field as repairing scaffolds, due to their mechanical and magnetization behavior that can stimulate tissue regeneration.

scholarly journals ESR as a monitoring method of the interactions between TEMPO-functionalized magnetic nanoparticles and yeast cells

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Ryszard Krzyminiewski ◽  
Bernadeta Dobosz ◽  
Grzegorz Schroeder ◽  
Joanna Kurczewska
Keyword(s):  
Magnetic Nanoparticles ◽  
Drug Carriers ◽  
Magnetic Core ◽  
Yeast Cells ◽  
Spin Labels ◽  
Monitoring Method ◽  
Functionalized Magnetic Nanoparticles ◽  
Spin Resonance

AbstractPotential application of magnetic nanoparticles as drug carriers in medical treatment requires prior determination of their effects on cells. In this work different spin labels and magnetic nanoparticles functionalized with spin labels as well as their interaction with yeast cells were investigated using electron spin resonance (ESR) method. ESR was demonstrated to be a suitable method for monitoring of magnetic core and attached spin labels. Particular emphasis was placed on characterization of endocytosis and redox processes running inside the cell, resulting in recombination of spin labels. Such data could only be obtained at reduced temperature of ESR measurements.

scholarly journals Preparation and Complex Characterization of Magnetic Nanoparticles in Magnetic Fluid

2014 ◽  
Vol 126 (1) ◽  
pp. 268-269 ◽  
Author(s):  
M. Kubovčíková ◽  
I. Antal ◽  
J. Kováč ◽  
V. Závišová ◽  
M. Koneracká ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Magnetic Fluid ◽  
Complex Characterization

IMMOBILIZATION OF BSA ON DENDRIMER FUNCTIONALIZED MAGNETIC NANOPARTICLES

2011 ◽  
Vol 10 (04n05) ◽  
pp. 919-923 ◽  
Author(s):  
S. CHANDRA ◽  
N. NITHYAMATHI ◽  
P. SELVAMANI ◽  
D. BAHADUR
Keyword(s):  
Particle Size ◽  
Iron Oxide ◽  
Magnetic Nanoparticles ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Ftir Spectroscopy ◽  
Magnetite Nanoparticles ◽  
Bovine Serum ◽  
Oxide Nanoparticles ◽  
Functionalized Magnetic Nanoparticles

Iron oxide nanoparticles were prepared and functionalized by succinamide based dendrimer. The resultant particles were characterized by XRD, VSM, and FTIR spectroscopy. The results indicate that the dendrimers has effectively functionalized the magnetite nanoparticles which remain dispersive and exhibited super-paramagnetism with a magnetization value of 33.2 emu/g in a field of 2T. Mean particle size as calculated from the AFM was found to be ~ 23 nm. Bovine serum albumin was immobilized on the magnetic nanoparticles as was confirmed by the FTIR results.

A simple and fast method based on functionalized magnetic nanoparticles for the determination of Ag(i), Au(iii) and Pd(ii) in mine stone, road dust and water samples

2017 ◽  
Vol 9 (19) ◽  
pp. 2873-2882 ◽  
Author(s):  
Sara Karami ◽  
Homeira Ebrahimzadeh ◽  
Ali Akbar Asgharinezhad
Keyword(s):  
Magnetic Nanoparticles ◽  
Magnetite Nanoparticles ◽  
Water Samples ◽  
Road Dust ◽  
Fast Method ◽  
Functionalized Magnetic Nanoparticles

A schematic for the synthesis of magnetite nanoparticles modified with murexide.

Electrophoretic Characterization of Insulin Growth Factor (IGF-1) Functionalized Magnetic Nanoparticles

Langmuir ◽  
2011 ◽  
Vol 27 (10) ◽  
pp. 6426-6432 ◽  
Author(s):  
Julián L. Viota ◽  
Katarzyna Rudzka ◽  
Ángel Trueba ◽  
Ignacio Torres-Aleman ◽  
Ángel V. Delgado
Keyword(s):  
Magnetic Nanoparticles ◽  
Growth Factor ◽  
Insulin Growth Factor ◽  
Functionalized Magnetic Nanoparticles

scholarly journals Complex Morphostructural and in vitro Biological Investigation of Nanocomposite Hydrogels Tailored with Magnetic Nanoparticles

2020 ◽  
Vol 70 (12) ◽  
pp. 4420-4425
Keyword(s):  
Electron Microscopy ◽  
Magnetic Nanoparticles ◽  
Specific Cell ◽  
Biological Investigation ◽  
X Ray ◽  
Nanocomposite Hydrogels ◽  
In Vitro Biocompatibility ◽  
Selected Area Electron Diffraction ◽  
Transmission Electron

The morphology and the microstructure of the nanocomposite hydrogels, prepared by free-radical polymerization of acrylamide monomer and double bond functionalized magnetite nanoparticles, were analysed by scanning electron microscopy. Nanostructural characteristic and crystalline structure were studied by high resolution transmission electron microscopy and selected area electron diffraction. Elemental composition was analysed by energy dispersive X-ray spectroscopy. In vitro biocompatibility evaluation was performedon specific cell lines. Keywords: magnetic nanoparticles, polyacrylamide, SEM, TEM, biocompatibility

Experimental and First-Principles Characterization of Functionalized Magnetic Nanoparticles

ChemPhysChem ◽  
2013 ◽  
Vol 14 (9) ◽  
pp. 1934-1942 ◽  
Author(s):  
Georgios S. E. Antipas ◽  
Eleftherios Statharas ◽  
Philippos Tserotas ◽  
Nikolaos Papadopoulos ◽  
E. Hristoforou
Keyword(s):  
Magnetic Nanoparticles ◽  
First Principles ◽  
Functionalized Magnetic Nanoparticles
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