Development of Cation Exchange Membranes for Electrochemical Bunsen Reactions by Radiation–Induced Graft Polymerization

MEMBRANE ◽  
2016 ◽  
Vol 41 (3) ◽  
pp. 114-120
Author(s):  
Tetsuya Yamaki ◽  
Takehide Kodaira ◽  
Shin-ichi Sawada ◽  
Nobuyuki Tanaka ◽  
Shinji Kubo ◽  
...  
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...


2010 ◽  
Vol 21 (1) ◽  
pp. 29-34 ◽  
Author(s):  
Yuta SEKIYA ◽  
Yuichi SHIMODA ◽  
Daisuke UMENO ◽  
Kyoichi SAITO ◽  
Goro FURUMOTO ◽  
...  

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.


1973 ◽  
pp. 1188-1194
Author(s):  
Shoji HASHIMOTO ◽  
Akira UDAGAWA ◽  
Eiichi KAGEYAMA

1993 ◽  
Vol 81 (3) ◽  
pp. 295-305 ◽  
Author(s):  
William Lee ◽  
Kyoichi Saito ◽  
Shintaro Furusaki ◽  
Takanobu Sugo ◽  
Keizo Makuuchi

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
M. M. Nasef ◽  
H. Saidi ◽  
A. H. Yahaya

Crosslinked cation exchange membranes bearing sulfonic acid groups (PE-g-PSSA/DVB) were prepared by radiationinduced grafting of styrene/divinylbenzene (DVB) mixtures onto low density polyethylene (PE) films followed by sulfonation reactions. The effect of addition of DVB (2 and 4%) on the grafting behavior and the physico-chemical properties of the membranes such as ion exchange capacity, swelling and ionic conductivity were evaluated incorrelation with grafting yield (Y%). The structural and thermal properties of the membranes were also studied using differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA), respectively. Crosslinking with DVB was found to considerably affect the properties of the membranes in a way that reduces the swelling properties and enhances the chemical stability. The ion conductivity of the crosslinked membranes recorded a level of 10–2 S/cm at sufficient grafting yield (28%) despite the reduction caused by the formation of crosslinking structure. The results of this work suggest that membranes prepared in this study are potential alternatives for various electrochemical applications.


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