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You searched for: Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019 Subject term epoxides Remove constraint Subject term: epoxides Subject term magnetism Remove constraint Subject term: magnetism
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1. A rapid competitive ELISA assay of Okadaic acid level based on epoxy-functionalized magnetic beads

Author:
Linjiang Pang; Haoran Quan; Ying Sun; Pingya Wang; Daifu Ma; Pengqian Mu; Tingting Chai; Yiming Zhang; Bruce D. Hammock
Source:
Food and agricultural immunology 2019 v.30 no.1 pp. 1286-1302
ISSN:
1465-3443
Subject:
activated carbon; enzyme-linked immunosorbent assay; epoxides; goats; inhibitory concentration 50; liquid chromatography; magnetism; mice; monoclonal antibodies; okadaic acid; peroxidase; phycotoxins; rapid methods; shellfish; tandem mass spectrometry
Abstract:
... Using newly designed epoxy group activated carbon shell magnetic beads as a goat against mouse antibody (G-Mab) carrier, a competitive immunoassay was conducted on the surface of G-Mab-coated magnetic beads (G-Mab-MBs). Mouse monoclonal antibody against Okadaic acid (MAb), Okadaic acid-horseradish peroxidase conjugate (OA-HRP) and OA were simultaneously added into a reaction system. The enzyme-lin ...
DOI:
10.1080/09540105.2019.1689231

2. CoFe₂O₄/Cu(OH)₂ magnetic nanocomposite: an efficient and reusable heterogeneous catalyst for one-pot synthesis of β-hydroxy-1,4-disubstituted-1,2,3-triazoles from epoxides

Author:
Ronak Eisavi; Asmar Karimi
Source:
RSC advances 2019 v.9 no.51 pp. 29873-29887
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; alkynes; catalysts; catalytic activity; copper hydroxide; energy-dispersive X-ray analysis; epoxides; magnetic materials; magnetic properties; magnetism; nanocomposites; regioselectivity; scanning electron microscopy; sodium azide; solvents; synthesis; transmission electron microscopy; triazoles
Abstract:
... A magnetically separable CoFe₂O₄/Cu(OH)₂ nanocomposite was prepared and characterized by various techniques such as FESEM, EDS, TEM, XRD, VSM and FT-IR. This novel composite was used as a heterogeneous catalyst for the regioselective synthesis of β-hydroxy-1,4-disubstituted-1,2,3-triazoles from sodium azide, terminal alkynes and structurally different epoxides in water at 60 °C. The formation of t ...
DOI:
10.1039/c9ra06038c

3. Electromagnetic interference shielding MWCNT-Fe3O4@Ag/epoxy nanocomposites with satisfactory thermal conductivity and high thermal stability

Author:
Lei Wang; Hua Qiu; Chaobo Liang; Ping Song; Yixin Han; Yixuan Han; Junwei Gu; Jie Kong; Duo Pan; Zhanhu Guo
Source:
Carbon 2019 v.141 pp. 506-514
ISSN:
0008-6223
Subject:
carbon; carbon nanotubes; carboxylation; electrical conductivity; electromagnetic interference; electromagnetic radiation; epoxides; hardness; hysteresis; magnetism; modulus of elasticity; nanocomposites; nanoparticles; thermal conductivity; thermal stability
Abstract:
... Hierarchical composite nanoparticles of multiwall carbon nanotube (MWCNT)-Fe₃O₄@Ag combining electrical conductivity and magnetism were obtained from acyl-amine reaction between carboxylation of Fe₃O₄@Ag (Fe₃O₄@Ag-COOH) nanoparticles and amino functionalized MWCNTs (MWCNTs-NH₂). Finally, the MWCNT-Fe₃O₄@Ag/epoxy nanocomposites were fabricated via blending-casting method. When the mass ratio of MWC ...
DOI:
10.1016/j.carbon.2018.10.003

4. Facile fabrication of self-healing superhydrophobic nanocomposite films enabled by near-infrared light

Author:
Wei Li; Gang Wu; Jinhui Tan; Yuntao Zhu; Xufeng Yu; Yang Lei; Gang Sun; Bo You
Source:
Journal of materials science 2019 v.54 no.10 pp. 7702-7718
ISSN:
0022-2461
Subject:
cutting; epoxides; ethanol; evaporation; gravity; hydrophobicity; iron oxides; irradiation; magnetism; nanocomposites; nanoparticles; silica; solvents; spraying; ultraviolet radiation
Abstract:
... A novel robust self-healing superhydrophobic F-SiO₂/Fe₃O₄/EP(epoxy)/PCL nanocomposite film was fabricated through a facile two-step method including resin spraying and NPs perpendicular gradient deposition. Specially, the epoxy/polycaprolactone (EP/PCL) mixed resin matrix was prepared through a spraying process and the functioned silica/magnetic iron oxide (F-SiO₂/Fe₃O₄) nanoparticles were then de ...
DOI:
10.1007/s10853-019-03426-7

5. Hydrophilic spacer-arm containing magnetic nanoparticles for immobilization of proteinase K: Employment for speciation of proteins for mass spectrometry-based analysis

Author:
Gulay Bayramoglu; Hacı Mehmet Kayili; Merve Oztekin; Bekir Salih; M. Yakup Arica
Source:
Talanta 2019 pp. -
ISSN:
0039-9140
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; beta-casein; bovine serum albumin; chemical bonding; coprecipitation; employment; enzymatic treatment; epoxides; glutaraldehyde; glycoproteins; hydrophilicity; immunoglobulins; magnetism; matrix-assisted laser desorption-ionization mass spectrometry; models; nanoparticles; nucleic acids; peptidase K; peptides; polyethylene glycol; scanning electron microscopy; silica; storage temperature; storage time
Abstract:
... Proteinase K (ProK) is used for the degradation of proteins in cell lysates to isolate nucleic acids, and for the speciation of proteins for mass spectrometry analysis. In this work, a novel and sensitive immobilization process was developed for examination of protein mixtures by combining MALDI-ToF-MS and nLC-TIMS-ToF-MS/MS systems. To achieve these goals, magnetic nanoparticles (MPs) were prepar ...
DOI:
10.1016/j.talanta.2019.120218

6. Immobilized feruloyl esterase from Humicola insolens catalyzes the synthesis of feruloylated oligosaccharides

Author:
Juan Tamayo-Cabezas; Salwa Karboune
Source:
Process biochemistry 2019 v.79 pp. 81-90
ISSN:
1359-5113
Subject:
Humicola insolens; acylation; catalytic activity; emulsions; epoxides; ferulic acid; feruloyl esterase; magnetism; microparticles; nanoparticles; raffinose; substrate specificity
Abstract:
... Ferulic acid acylation of oligosaccharides catalyzed by feruloyl esterases (FAE) is a promising route to produce feruloylated oligosaccharides. However, modulation of FAE synthetic properties is a key step to improve the acylation. The efficiency of H. insolens FAE to catalyze the feruloylation in six different surfactantless microemulsions reaction systems was evaluated. The highest yield (57%) w ...
DOI:
10.1016/j.procbio.2018.12.013

7. Immobilizing sulfotransferase 1A1 on magnetic microparticles and their evaluation using capillary electrophoresis

Author:
Pranov Ramana; Erwin Adams; Patrick Augustijns; Ann Van Schepdael
Source:
Electrophoresis 2019 v.40 no.18-19 pp. 2271-2276
ISSN:
0173-0835
Subject:
acetaminophen; batch systems; capillary electrophoresis; enzyme activity; epoxides; humans; magnetism; microparticles; models; sulfates; sulfonates; sulfotransferases; xenobiotics
Abstract:
... Sulfotransferases are categorized as phase II metabolic enzymes. Human sulfotransferase 1A1 (SULT1A1) is involved in the sulfonation of xenobiotics with aid from the cofactor 3'‐phosphoadenosine‐5'‐phosphosulfate that acts as a sulfonate donor. In this study, we have attempted to immobilize SULT1A1 on magnetic microparticles (MMs). Different functionalized MMs were used to immobilize SULT1A1 and t ...
DOI:
10.1002/elps.201900016

8. Nano-magnetite decorated carbon fibre for enhanced interfacial shear strength

Author:
Seyed Mousa Fakhrhoseini; Quanxiang Li; Vishnu Unnikrishnan; Minoo Naebe
Source:
Carbon 2019 v.148 pp. 361-369
ISSN:
0008-6223
Subject:
ammonium; carbon; carbon fibers; energy; epoxides; iron; iron oxides; magnetism; nanoparticles; shear strength; sulfates; temperature
Abstract:
... The modification of carbon fibres surface has been achieved by high temperature (1000 °C) growth of Fe3O4 magnetic nanoparticles (MNPs) on the surface of carbon fibres using ammonium iron (II) sulphate as a single precursor of the nanoparticles. As a consequence, the formation of MNPs on the surface of unsized carbon fibres increased the interfacial shear strength by 84.3%, as measured by single f ...
DOI:
10.1016/j.carbon.2019.03.078

9. Synthesis and characterization of magnetic hybrid nanomaterials via RAFT polymerization: A pH sensitive drug delivery system

Author:
Ali Pourjavadi; Mohammad Kohestanian; Mahdieh Shirzad
Source:
Colloids and surfaces 2019 v.174 pp. 153-160
ISSN:
0927-7765
Subject:
buffers; chemical bonding; colloids; doxorubicin; epoxides; hydrazine; hydrazones; iron oxides; magnetism; nanocarriers; nanoparticles; pH; polymerization
Abstract:
... Herein, a facile and versatile method for the synthesis of a novel magnetic nanocarrier via surface- initiated reversible addition-fragmentation chain transfer (RAFT) polymerization is introduced. At first, RAFT agent was successfully attached to the surface of Fe₃O₄ nanoparticles and, then, poly (glycidyl methacrylate) (PGMA) chains were grown and anchored onto the surface of Fe₃O₄ nanoparticles. ...
DOI:
10.1016/j.colsurfb.2018.11.006

10. Synthesis of magnetic graphene aerogels for microwave absorption by in-situ pyrolysis

Author:
Dongwei Xu; Sen Yang; Ping Chen; Qi Yu; Xuhai Xiong; Jing Wang
Source:
Carbon 2019 v.146 pp. 301-312
ISSN:
0008-6223
Subject:
absorption; aerogels; epoxides; graphene; magnetism; nanocomposites; nanocrystals; nanosheets; nickel; pyrolysis; synergism; temperature; transmission electron microscopy
Abstract:
... High-performance magnetic graphene aerogels nanocomposites with low density and enhanced microwave absorption properties have been developed firstly by a two-step strategy combining hydrothermal reaction and in situ pyrolysis. TEM images indicate that ultra-fine Ni nanocrystals with a relatively uniform size of 8 nm are anchored to the graphene nanosheets. Meanwhile, the resulting magnetic graphen ...
DOI:
10.1016/j.carbon.2019.02.005