Highly magnetic sensitivity of polymer nanocomposite hydrogels based on magnetic nanoparticles

2017 ◽  
Vol 141 ◽  
pp. 40-47 ◽  
Author(s):  
Youyi Sun ◽  
Yan Wang ◽  
Junru Yao ◽  
Li Gao ◽  
Dian-sen Li ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Polymer Nanocomposite ◽  
Nanocomposite Hydrogels ◽  
Magnetic Sensitivity

scholarly journals Increasing the magnetic sensitivity of liquid crystals by rod-like magnetic nanoparticles

2013 ◽  
Vol 49 (3-4) ◽  
pp. 586-591 ◽  
Author(s):  
P. Kopċanský ◽  
N. Tomašoviċová ◽  
T. Tóth-Katona ◽  
N. Éber ◽  
M. Timko ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Magnetic Nanoparticles ◽  
Magnetic Sensitivity

Polymer Nanocomposite Hydrogels Exhibiting Both Dynamic Restructuring and Unusual Adhesive Properties

Langmuir ◽  
2013 ◽  
Vol 29 (23) ◽  
pp. 7087-7095 ◽  
Author(s):  
Mian Wang ◽  
Du Yuan ◽  
Xiaoshan Fan ◽  
Nanda Gopal Sahoo ◽  
Chaobin He
Keyword(s):  
Polymer Nanocomposite ◽  
Adhesive Properties ◽  
Nanocomposite Hydrogels

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

Conformance control for production optimisation using polymer nanocomposite hydrogels

2020 ◽  
Vol 60 (2) ◽  
pp. 658
Author(s):  
Reza M. Rudd ◽  
Ali Saeedi ◽  
Colin D. Wood
Keyword(s):  
Oil Recovery ◽  
Preferential Flow ◽  
Polymer Nanocomposite ◽  
Nanocomposite Hydrogel ◽  
Core Flooding ◽  
Conformance Control ◽  
Hydrocarbon Recovery ◽  
Polymer Hydrogels ◽  
Nanocomposite Hydrogels ◽  
Pass Through

Conformance control is a major challenge in hydrocarbon recovery operations. One of the effective technologies for improving the conformance of a flood front and modifying the injected fluid profile is the application of polymer hydrogels. In this technique, polymer hydrogels are prepared as gel particles, which are injected into the reservoir to block-off preferential flow paths and thief zones, such as fractures and high permeability zones. Subsequently, the fluid injected as part of oil recovery operation would be directed and forced to pass through low permeable zones and sweep more hydrocarbon mass towards the production wells. Depending on the situation, this technology can result in a considerable incremental hydrocarbon recovery from a reservoir. In the present research, nanotechnology was combined with polymer engineering to develop a novel polymer nanocomposite hydrogel with supreme properties, as confirmed using advanced rheological characterisation. Subsequently, the performance of the newly developed nanocomposite hydrogel was tested using a specially designed core flooding setup and procedure. The core flooding results showed that the application of this novel hydrogel could increase the oil recovery by up to 16% under laboratory conditions.

Silver nanoparticles incorporated within intercalated clay/polymer nanocomposite hydrogels for antibacterial studies

2016 ◽  
Vol 38 ◽  
pp. E16-E23 ◽  
Author(s):  
Manjula Bandla ◽  
Babul Reddy Abbavaram ◽  
Varaprasad Kokkarachedu ◽  
Rotimi E. Sadiku
Keyword(s):  
Silver Nanoparticles ◽  
Polymer Nanocomposite ◽  
Nanocomposite Hydrogels ◽  
Antibacterial Studies

Tunable photoluminescence from layered rare-earth hydroxide/polymer nanocomposite hydrogels by a cascaded energy transfer effect

2017 ◽  
Vol 5 (21) ◽  
pp. 5207-5213 ◽  
Author(s):  
Lianying Wu ◽  
Caiyan Gao ◽  
Zhibo Li ◽  
Guangming Chen
Keyword(s):  
Energy Transfer ◽  
Rare Earth ◽  
Polymer Nanocomposite ◽  
Transfer Effect ◽  
Nanocomposite Hydrogels

Highly tunable photoluminescence has been achieved from layered rare-earth hydroxide (LGd0.5Tb0.5−xEuxH)/polymer nanocomposite hydrogels by a cascaded energy transfer effect.

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.

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