scholarly journals Radiation-Induced Graft Polymerization of Vinyl Monomers with Anion Groups onto MWNT Supports and Their Application as Electrogenerated Chemiluminescence (ECL) Biosensors

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Ji-Hye Park ◽  
Yun Ok Kang ◽  
Seong-Ho Choi
Keyword(s):  
Graft Polymerization ◽  
Alcohol Concentration ◽  
Electrogenerated Chemiluminescence ◽  
Vinyl Monomers ◽  
Multiwalled Carbon ◽  
Glass Carbon Electrode ◽  
Polymer Binders ◽  
Glass Carbon ◽  
Vinyl Polymer ◽  
Radiation Induced

Vinyl polymer-grafted multiwalled carbon nanotube (MWNT) supports with anion groups were prepared for use as biosensor supports by radiation-induced graft polymerization (RIGP) of the vinyl monomers acryloyl diphosphoric acid (ADPA), acrylic acid (AA), sodium styrenesulfonate (NaSS), and methacrylic acid (MA) onto the surface of MWNTs. The electrogenerated chemiluminescence sensors based on a glass carbon electrode (ECL-GCE) and a screen printed electrode (ECL-SPE) were fabricated by immobilization of Ru(bpy)3 2+complex after coating of vinyl polymer-grafted MWNT inks on the surface of the GCE and SPE without any polymer binders in order to obtain high electrogenerated chemiluminescence intensity. For detection of alcohol concentration, alcohol dehydrogenase (ADH) was immobilized onto an ECL-GCE sensor prepared by poly(NaSS)-g-MWNT supports. The prepared biosensor based on ADH is suitable for the detection of ethanol concentration in commercial drinks.

scholarly journals Introduction of Bifunctional Group onto MWNT by Radiation-Induced Graft Polymerization and Its Use as Biosensor-Supporting Materials

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Yu-Jin Lee ◽  
Da-Jung Chung ◽  
Sang-Hyub Oh ◽  
Seong-Ho Choi
Keyword(s):  
Photoelectron Spectroscopy ◽  
Glycidyl Methacrylate ◽  
Redox Reactions ◽  
Graft Polymerization ◽  
Red Wine ◽  
Multiwalled Carbon ◽  
X Ray ◽  
Transmission Electron ◽  
Radiation Induced ◽  
Supporting Materials

A biosensor comprisingtyrosinaseimmobilized on bifunctionalized multiwalled carbon nanotube (MWNT) supports was prepared for the detection of phenolic compounds in drinks such as red wine and juices. The MWNT supports were prepared by radiation-induced graft polymerization (RIGP) of epoxy-containing glycidyl methacrylate (GMA), to covalently immobilize thetyrosinase, and vinyl ferrocene (VF), which can act as an electron transfer mediator via redox reactions. The bifunctionalized MWNTs were characterized by X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA). Electrodes prepared with the MWNTs showed increased current with increasing VF content. A biosensor comprisingtyrosinaseimmobilized on the bifunctionalized MWNTs could detect phenol at 0.1–20 mM. Phenolics in red wine and juices were determined using the biosensor after its calibration.

Aeration of Natural Rubber Latex. II. Graft Polymerization of Vinyl Monomers with Aerated Latex Rubber

1958 ◽  
Vol 31 (3) ◽  
pp. 430-435 ◽  
Author(s):  
B. C. Sekhar
Keyword(s):  
Natural Rubber ◽  
Methyl Methacrylate ◽  
Graft Polymerization ◽  
Natural Rubber Latex ◽  
Gel Strength ◽  
Vinyl Monomers ◽  
Polymer Content ◽  
Rubber Latex ◽  
Film Forming ◽  
Vinyl Polymer

Abstract The peroxidic groups produced on the rubber hydrocarbon when oxygen is absorbed by ammonia-preserved latex are capable of initiating the graft polymerization of methyl methacrylate and other vinyl monomers, in the presence of suitable reducing agents. The products so formed contain only small proportions of unbound homopolymer. In the latex state, the products have a much higher wet gel strength and better film forming properties than materials of the same total vinyl polymer content prepared by other methods.

scholarly journals Radiation-Induced Graft-Polymerization of Vinyl Monomers on Permutit

1971 ◽  
Vol 28 (314) ◽  
pp. 524-530,552 ◽  
Author(s):  
Yoshiko Kanazawa ◽  
Fukuji Higashide
Keyword(s):  
Graft Polymerization ◽  
Vinyl Monomers ◽  
Radiation Induced

scholarly journals Radiation-Induced Asymmetric Grafting of Different Monomers into Base Films to Prepare Novel Bipolar Membranes

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 2028
Author(s):  
Shin-ichi Sawada ◽  
Yasunari Maekawa
Keyword(s):  
Acrylic Acid ◽  
Anion Exchange ◽  
Graft Polymerization ◽  
The Other ◽  
Practical Applications ◽  
Bipolar Membranes ◽  
Graft Polymers ◽  
Grafting Reactions ◽  
Radiation Induced

We prepared novel bipolar membranes (BPMs) consisting of cation and anion exchange layers (CEL and AEL) using radiation-induced asymmetric graft polymerization (RIAGP). In this technique, graft polymers containing cation and anion exchange groups were introduced into a base film from each side. To create a clear CEL/AEL boundary, grafting reactions were performed from each surface side using two graft monomer solutions, which are immiscible in each other. Sodium p-styrenesulfonate (SSS) and acrylic acid (AA) in water were co-grafted from one side of the base ethylene-co-tetrafluoroethylene film, and chloromethyl styrene (CMS) in xylene was simultaneously grafted from the other side, and then the CMS units were quaternized to afford a BPM. The distinct SSS + AA- and CMS-grafted layers were formed owing to the immiscibility of hydrophilic SSS + AA and hydrophobic CMS monomer solutions. This is the first BPM with a clear CEL/AEL boundary prepared by RIAGP. However, in this BPM, the CEL was considerably thinner than the AEL, which may be a problem in practical applications. Then, by using different starting times of the first SSS+AA and second CMS grafting reactions, the CEL and AEL thicknesses was found to be controlled in RIAGP.

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