Radiation-induced GMA/DMAA graft copolymerization onto porous PE hollow-fiber membrane

2003 ◽  
Vol 87 (10) ◽  
pp. 1646-1653 ◽  
Author(s):  
Mariano Grasselli ◽  
M. Laura Carbajal ◽  
Fumio Yoshii ◽  
Takanobu Sugo
Keyword(s):  
Hollow Fiber ◽  
Graft Copolymerization ◽  
Hollow Fiber Membrane ◽  
Fiber Membrane ◽  
Radiation Induced

scholarly journals Recent Progress in Charged Polymer Chains Grafted by Radiation-Induced Graft Polymerization; Adsorption of Proteins and Immobilization of Inorganic Precipitates

2020 ◽  
Vol 4 (2) ◽  
pp. 20 ◽  
Author(s):  
Ryo Ishihara ◽  
Shiho Asai ◽  
Kyoichi Saito
Keyword(s):  
Hollow Fiber ◽  
Graft Polymerization ◽  
Hollow Fiber Membrane ◽  
Pure Water ◽  
Polymer Chains ◽  
Permeation Flux ◽  
Fiber Membrane ◽  
Polymer Substrates ◽  
Radiation Induced ◽  
Charged Polymer

Radiation-induced graft polymerization provides industrially superior functionalization schemes by selection of existing polymer substrates and design of graft chains. In this review, by a pre-irradiation method of the radiation-induced graft polymerization and subsequent chemical modifications, charged polymer chains grafted onto various components and shapes of the polymer substrates are described. The charged graft chains immobilized onto a porous hollow-fiber membrane captured proteins in multilayers via multipoint binding. A membrane onto which positively charged graft chains are immobilized, i.e., an anion-exchange porous hollow-fiber membrane, was commercialized in 2011 for the removal of undesirable proteins in the purification of pharmaceuticals. On the other hand, a membrane onto which negatively charged graft chains are immobilized, i.e., a cation-exchange porous hollow-fiber membrane, exhibited a low permeation flux for pure water; however, the prepermeation of an aqueous solution of magnesium chloride through the membrane restored the permeation flux because of ionic crosslinking of graft chains with magnesium ions. The charged graft chains provide a precipitation field for inorganic compounds such as insoluble cobalt ferrocyanide. The graft chains entangle or penetrate a precipitate owing to electrostatic interactions with the surface charge on the precipitate. Braids and wound filters composed of insoluble-cobalt-ferrocyanide-impregnated fibers are used for the removal of radiocesium from contaminated water at Tokyo Electric Power Co. (TEPCO) Fukushima Daiichi Nuclear Power Plant.

Recovery of Sb(V) using a functional-ligand-containing porous hollow-fiber membrane prepared by radiation-induced graft polymerization

2006 ◽  
Vol 81 (3-4) ◽  
pp. 190-196 ◽  
Author(s):  
Hidetaka Kawakita ◽  
Kazuya Uezu ◽  
Satoshi Tsuneda ◽  
Kyoichi Saito ◽  
Masao Tamada ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Graft Polymerization ◽  
Hollow Fiber Membrane ◽  
Fiber Membrane ◽  
Radiation Induced

Simulation of Oxygen Permeability of Dual-phase Hollow Fiber Membrane

2012 ◽  
Vol 27 (9) ◽  
pp. 951-955
Author(s):  
Chun-Li YANG ◽  
Qi-Ming XU ◽  
Ming GONG ◽  
Wei LIU
Keyword(s):  
Hollow Fiber ◽  
Oxygen Permeability ◽  
Hollow Fiber Membrane ◽  
Dual Phase ◽  
Fiber Membrane
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