scholarly journals Silanization as a versatile functionalization method for the synthesis of polymer/magnetite hybrid nanoparticles with controlled structure

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 53903-53911 ◽  
Author(s):  
Alexander Schoth ◽  
Alasdair D. Keith ◽  
Katharina Landfester ◽  
Rafael Muñoz-Espí
Keyword(s):  
Surface Functionalization ◽  
Magnetite Nanoparticles ◽  
Miniemulsion Polymerization ◽  
Hybrid Nanoparticles ◽  
Hybrid Particles ◽  
Controlled Structure ◽  
Subsequent Incorporation

We compare the use of different trimethoxysilane compounds for the surface functionalization of magnetite nanoparticles and their subsequent incorporation in hybrid particles formed byin situminiemulsion polymerization.

Preparation and Characterization of Magnetic Functional Hybrid Particles

2011 ◽  
Vol 101-102 ◽  
pp. 918-921
Author(s):  
Hui Ying Wen ◽  
Hai Feng Fang ◽  
Shen Ling Xiao
Keyword(s):  
Magnetite Nanoparticles ◽  
Magnetic Particles ◽  
Miniemulsion Polymerization ◽  
Polystyrene Latex ◽  
Composite Particles ◽  
Core Shell ◽  
Hybrid Particles ◽  
Latex Particles ◽  
Shell Particles ◽  
Shell Composite

Hybrid microspheres with a polystyrene core coated with magnetite nanoparticles were prepared by two techniques. Firstly, monodispersed functional polystyrene latex particles were prepared by emulsion polymerization. In a general way chemical groups may be introduced through polymerizable surfactant or functional monomer. Magnetite acidic or alkaline sol was added in, then magnetite nanoparticles were absorbed onto latex particles by electrostatic attraction and core-shell composite particles were formed. Secondly, core-shell composite particles were prepared by miniemulsion polymerization. To modify the tendency of conglomeration of magnetite and increase the amount of magnetic particles onto the composite particles, silane coupling agent MPS was used as surface modification agent for magnetite. A series of different size and coating morphology magnetic hybrid particles were prepared through the adjustment of some experiment parameters. The obtained functional core-shell particles were characterized by FTIR, TEM, etc.

Metal in situ surface functionalization of polymer-grafted-carbon nanotube composite membranes for fast efficient nanofiltration

2017 ◽  
Vol 5 (2) ◽  
pp. 583-592 ◽  
Author(s):  
Faizal Soyekwo ◽  
Qiugen Zhang ◽  
Runsheng Gao ◽  
Yan Qu ◽  
Ruixue Lv ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Carbon Nanotube ◽  
Metal Ions ◽  
Surface Functionalization ◽  
Heavy Metal Ions ◽  
Composite Membranes ◽  
Carbon Nanotube Composite

Metal in situ surface functionalized PEI-g-MWCNT membranes are facilely prepared for nanofiltration of heavy metal ions in solution with high fluxes.

scholarly journals Acrylamide inverse miniemulsion polymerization: in situ, real-time monitoring using nir spectroscopy

2014 ◽  
Vol 31 (4) ◽  
pp. 925-933 ◽  
Author(s):  
M. M. E. Colmán ◽  
D. L. Chicoma ◽  
R. Giudici ◽  
P. H. H. Araújo ◽  
C. Sayer
Keyword(s):  
Real Time ◽  
Miniemulsion Polymerization ◽  
Nir Spectroscopy ◽  
Real Time Monitoring ◽  
Inverse Miniemulsion

Preparation of Polyurethane/Acrylic Hybrid Nanoparticles via a Miniemulsion Polymerization Process

2005 ◽  
Vol 38 (10) ◽  
pp. 4183-4192 ◽  
Author(s):  
Mei Li ◽  
Eric S. Daniels ◽  
Victoria Dimonie ◽  
E. David Sudol ◽  
Mohamed S. El-Aasser
Keyword(s):  
Miniemulsion Polymerization ◽  
Hybrid Nanoparticles ◽  
Polymerization Process

scholarly journals Graphene oxide chemically decorated with hybrid Ag-Ru/chitosan nanoparticles: fabrication and properties

2015 ◽  
Author(s):  
Murugan Veerapandian ◽  
Suresh Neethirajan
Keyword(s):  
Graphene Oxide ◽  
Chitosan Nanoparticles ◽  
Hybrid Nanoparticles ◽  
Spectroscopic Techniques ◽  
Wet Chemical ◽  
Amine Groups ◽  
Oxygenated Functional Groups ◽  
Coordination Reaction

Hybridization of distinct materials into a single nanoplatform is relevant to advance material’s properties for functional application such as biosensor platform. We report the synthesis and characterization of nanosheets of graphene oxide decorated with hybrid nanoparticles of silver-ruthenium bipyridine complex (Ag@[Ru(bpy)3]2+) core and chitosan shell. Hybrid nanoparticles were first obtained through a sequential wet-chemical approach using in situ reduction, electrostatic and coordination reaction. Oxygenated functional groups of graphene oxide and abundant amine groups of chitosan layer on the surface of hybrid nanoparticles allowed the functionalization reaction. Changes in intrinsic optical, chemical and structural properties of graphene oxide due to hybrid nanoparticles were studied in depth using spectroscopic techniques and an electron microscope. Electrodes modified with nanosheets of graphene oxide-hybrid nanoparticles retain the biocompatibility and displayed an amplified redox property suitable for a broad range of sensing studies.

scholarly journals In situ TEM oxidation study of Fe thin-film transformation to single-crystal magnetite nanoparticles

2020 ◽  
Vol 55 (27) ◽  
pp. 12897-12905
Author(s):  
Leonardo Lari ◽  
Stephan Steinhauer ◽  
Vlado K. Lazarov
Keyword(s):  
Thin Film ◽  
Single Crystal ◽  
Magnetite Nanoparticles ◽  
In Situ Tem ◽  
Oxidation Study

scholarly journals Ceria/polymer nanocontainers for high-performance encapsulation of fluorophores

2019 ◽  
Vol 10 ◽  
pp. 522-530 ◽  
Author(s):  
Kartheek Katta ◽  
Dmitry Busko ◽  
Yuri Avlasevich ◽  
Katharina Landfester ◽  
Stanislav Baluschev ◽  
...  
Keyword(s):  
Molecular Oxygen ◽  
High Performance ◽  
Liquid Core ◽  
Miniemulsion Polymerization ◽  
Oxygen Scavenger ◽  
Nanoparticle Layer ◽  
Electronically Excited ◽  
Organic Fluorophore ◽  
Fluorescent Molecules

We report the synthesis of high-performance organic–inorganic hybrid fluorescent nanocapsules comprising a polymer shell armored with an inorganic layer and a liquid core containing a fluorophore. The polymeric capsules are synthesized by free radical miniemulsion polymerization and contain covalently bound carboxylate surface functionalities that allow for the binding of metal ions through electrostatic interaction. A cerium(IV) oxide nanoparticle layer, formed in situ at the surface of the hybrid nanocapsules, acts as oxygen scavenger and keeps external reactive molecular oxygen from entering into the capsules, eventually resulting in a reduction of the photooxidation of encapsulated fluorescent molecules. This approach shows an increase in the fluorescence of the model organic fluorophore terrylene diimide by avoiding the ground-state molecular oxygen to react with electronically excited states of the fluorescent hydrocarbon molecule.

Facile fabrication of Janus magnetic microcapsules via double in situ miniemulsion polymerization

2013 ◽  
Vol 4 (5) ◽  
pp. 1459-1466 ◽  
Author(s):  
Jianan Zhang ◽  
Shuilai Qiu ◽  
Yulu Zhu ◽  
Zhengqi Huang ◽  
Beibei Yang ◽  
...  
Keyword(s):  
Miniemulsion Polymerization ◽  
Facile Fabrication
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