Radiation-Induced Graft Polymerization of Glycidyl Methacrylate onto Nonwoven Polypropylene

2005 ◽  
Vol 78 (5) ◽  
pp. 811-814 ◽  
Author(s):  
Yu. V. Bondar’ ◽  
Hong Je Kim ◽  
Yong Jin Lim
2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Yu-Jin Lee ◽  
Da-Jung Chung ◽  
Sang-Hyub Oh ◽  
Seong-Ho Choi

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.


MEMBRANE ◽  
2002 ◽  
Vol 27 (4) ◽  
pp. 196-201 ◽  
Author(s):  
Daisuke Okamura ◽  
Kyoichi Saito ◽  
Kazuyuki Sugita ◽  
Masao Tamada ◽  
Takanobu Sugo

2021 ◽  
Author(s):  
Xiaohan Pan ◽  
Jianhua Zu

Novel cation exchange nonwoven PP-g-SSS/GMA containing epoxy and sulfonic groups was successfully prepared by radiation-induced simultaneous grafting polymerization attaching glycidyl methacrylate (GMA) and styrene sulfonic sodium (SSS) monomers onto polypropylene...


2021 ◽  
Vol 179 ◽  
pp. 109259
Author(s):  
Mehwish Tahir ◽  
Asif Raza ◽  
Amara Nasir ◽  
Tariq Yasin

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 2028
Author(s):  
Shin-ichi Sawada ◽  
Yasunari Maekawa

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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