Title of article :
Cation exchange hybrid membranes from SPPO and multi-alkoxy silicon copolymer: Preparation, properties and diffusion dialysis performances for sodium hydroxide recovery
Author/Authors :
Xinle Xiao، نويسنده , , Cuiming Wu، نويسنده , , Peng Cui، نويسنده , , Jingyi Luo، نويسنده , , Yonghui Wu، نويسنده , , Tongwen Xu، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
9
From page :
112
To page :
120
Abstract :
Cation exchange hybrid membranes for diffusion dialysis (DD) purpose have been prepared from sol–gel process of multi-alkoxy silicon copolymer (poly(vinyl benzyl chloride-γ-methacryloxypropyl trimethoxy silane)—poly(VBC-co-γ-MPS)) in presence of sulfonated poly(2,6-dimethyl-1,4-phenylene oxide) (SPPO). The hybrid membranes possess high thermal stability, mechanical strength, strong alkali and swelling resistance. Thermal initial decomposition temperatures are in the range of 233–245 °C. Tensile strength (TS) ranges from 23 MPa to 41 MPa and elongation at break (Eb) is in the range of 11–50%. The swelling behavior of the membranes is better suppressed as poly(VBC-co-γ-MPS) content increases. The hybrid membranes have been successfully applied for DD recovery of sodium hydroxide (NaOH) from the mixture of NaOH and sodium tungstate (Na2WO4). The separation factor (S) of hybrid membranes can reach as high as 301.5 at 25 °C. The pure SPPO membrane, as a comparison membrane, exhibits much lower S value of 36.2.
Keywords :
SPPO , Cation exchange membrane , Diffusion dialysis , Sodium hydroxide , Hybrid membrane
Journal title :
Journal of Membrane Science
Serial Year :
2011
Journal title :
Journal of Membrane Science
Record number :
1356473
Link To Document :
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