scholarly journals Development of an Adsorbent for Cs Removal Synthesized by Radiation-Induced Graft Polymerization

2015 ◽  
Vol 26 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Takuya SHIBATA ◽  
Noriaki SEKO ◽  
Haruyo AMADA ◽  
Noboru KASAI ◽  
Seiichi SAIKI ◽  
...  
Keyword(s):  
Graft Polymerization ◽  
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.

scholarly journals Radiation-Induced Graft Polymerization of Acrylonitrile onto Poly(vinyl chbride) Film

1973 ◽  
pp. 1188-1194
Author(s):  
Shoji HASHIMOTO ◽  
Akira UDAGAWA ◽  
Eiichi KAGEYAMA
Keyword(s):  
Graft Polymerization ◽  
Radiation Induced

Design of urea-permeable anion-exchange membrane by radiation-induced graft polymerization

1993 ◽  
Vol 81 (3) ◽  
pp. 295-305 ◽  
Author(s):  
William Lee ◽  
Kyoichi Saito ◽  
Shintaro Furusaki ◽  
Takanobu Sugo ◽  
Keizo Makuuchi
Keyword(s):  
Anion Exchange ◽  
Graft Polymerization ◽  
Anion Exchange Membrane ◽  
Radiation Induced ◽  
Exchange Membrane

scholarly journals Application of proton beams to radiation-induced graft polymerization for making amidoxime-type adsorbents

2004 ◽  
Vol 69 (2) ◽  
pp. 171-178 ◽  
Author(s):  
Akira Kitamura ◽  
Shimpei Hamamoto ◽  
Akira Taniike ◽  
Yusuke Ohtani ◽  
Naoyoshi Kubota ◽  
...  
Keyword(s):  
Graft Polymerization ◽  
Proton Beams ◽  
Radiation Induced

scholarly journals Development of Hydrogen-Permselective Porous Membranes Using Radiation-Induced Graft Polymerization

2020 ◽  
Vol 4 (2) ◽  
pp. 23 ◽  
Author(s):  
Shin Hasegawa ◽  
Shinichi Sawada ◽  
Shinya Azami ◽  
Tokio Hagiwara ◽  
Akihiro Hiroki ◽  
...  
Keyword(s):  
Water Vapor ◽  
Acrylic Acid ◽  
Polyvinylidene Fluoride ◽  
Graft Polymerization ◽  
Hydrogen Permeability ◽  
Porous Membranes ◽  
Hot Press ◽  
Radiation Induced ◽  
Permeability For Water ◽  
Radiation Induced Grafting

Hydrogen-permselective membranes were developed using a radiation-induced grafting method. Styrene (St) and acrylic acid (AAc) monomers were introduced into porous polyvinylidene fluoride (PVDF) membranes to obtain St- and AAc-grafted PVDF membranes with grafting degrees of 82% and 92%, respectively. The porosities of the grafted membranes were controlled in the range 30–40% by hot-press compression at 159 °C and 4 MPa. The hydrogen permeability was found to be of the order of 10−7 mol/m2∙s∙Pa, which was higher than the permeability for water vapor and nitrogen (oxygen model). The St- and AAc-grafted membranes exhibited 9.0 and 34 times higher permeability for H2 than for H2O and N2, respectively.

scholarly journals Surface Engineering of Fluoropolymer Films via the Attachment of Crown Ether Derivatives Based on the Combination of Radiation-Induced Graft Polymerization and the Kabachnik–Fields Reaction

Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1337 ◽  
Author(s):  
Omichi ◽  
Yamashita ◽  
Okura ◽  
Ikutomo ◽  
Ueki ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Crown Ether ◽  
Crown Ethers ◽  
Graft Polymerization ◽  
Surface Engineering ◽  
Ammonium Cation ◽  
Three Component Reaction ◽  
Radiation Induced ◽  
Fluoropolymer Films

In this manuscript, we present the successful attachment of crown ether moieties onto fluoropolymer surfaces, via the combination of radiation-induced graft polymerization and a subsequent surface Kabachnik–Fields three-component reaction. The obtained crown ether-tethered fluoropolymer films exhibited an ammonium cation capturing ability, owing to the host–guest interactions (i.e., hydrogen bonding) between the surface-anchored crown ethers and the guest ammonium cations.

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