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Polyethylene oxide (PEO)/SiO 2 anion-exchange hybrid materials were prepared through the sol–gel process of alkoxysilane functionalized PEO-1000 (PEO-[Si(OCH 3 ) 3 ] 2 ) and N-[3-(trimethoxysilyl)propyl] ethylene diamine (A-1120). The influence of the multi-step sol–gel processing procedure, i.e. the pre-hydrolysis of either of the two precursors on the homogeneity...
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