Preparation of Cation Exchange Fiber by Preradiation-Induced Grafting of Acrylic Acid without Removal of the Inhibitor

2010 ◽  
Vol 150-151 ◽  
pp. 1764-1767 ◽  
Author(s):  
Jun Fu Wei ◽  
Kong Yin Zhao ◽  
Huan Zhang ◽  
Xiao Lei Wang ◽  
Li Chen
Keyword(s):  
Acrylic Acid ◽  
Cation Exchange ◽  
Storage Time ◽  
Monomer Concentration ◽  
Weak Acid ◽  
Polymerization Inhibitor ◽  
Acid Cation ◽  
Radiation Induced ◽  
Γ Ray ◽  
Radiation Induced Grafting

A weak acid cation exchange fiber was prepared by γ-ray pre-radiation induced grafting of acrylic acid (AA) onto polypropylene (PP) non-woven without removal of the polymerization inhibitor in acrylic acid. The factors influenced the grafting degree were discussed, such as radiation dose, initiator concentration, monomer concentration, storage time and bath ratio. It is found that the initiator 2, 2'-Azobisisobutyronitrile (AIBN) was necessary for the increased grafting of AA without removing the inhibitor in AA.

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.

Improving the efficiency of CO2 electrolysis by using a bipolar membrane with a weak-acid cation exchange layer

2020 ◽  
Vol 13 (1) ◽  
pp. 33-40
Author(s):  
Zhifei Yan ◽  
Jeremy L. Hitt ◽  
Zichen Zeng ◽  
Michael A. Hickner ◽  
Thomas E. Mallouk
Keyword(s):  
Cation Exchange ◽  
Weak Acid ◽  
Bipolar Membrane ◽  
Exchange Layer ◽  
Acid Cation ◽  
Co2 Electrolysis
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