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Pervaporation of ethanol aqueous solution by polyphosphazene membranes: Effect of pendant groups

机译:聚磷腈膜对乙醇水溶​​液的全蒸发:侧基的影响

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摘要

A series of phosphazene heteropolymers (NP (OC6H4C3 H5)_x(OC6H5)_y(OR)_z)_n were synthesized, where different pendant groups (-OC2H5, -OCH2CF3 and -OCH2CF2CF2CF2CF2H) providing hydrophobic property were used. All the polymers are amorphous materials with good film forming property. Pervaporation experiments were performed to characterize the polymer membranes. The results showed that poly-organophosphazene material with -OCH2CF3 group had the best membrane separation performance for-ethanol/water mixture under the same content of hydrophobic group. Solubility parameters calculation; and sorption measurement were also performed to study the structure-performance relationship.
机译:合成了一系列磷腈杂聚物(NP(OC6H4C3 H5)_x(OC6H5)_y(OR)_z)_n,其中使用了具有疏水性的不同​​侧基(-OC2H5,-OCH2CF3和-OCH2CF2CF2CF2CF2CF2H)。所有聚合物都是具有良好成膜性能的无定形材料。进行全蒸发实验以表征聚合物膜。结果表明,在相同的疏水基团含量下,带有-OCH2CF3基团的聚有机磷腈材料对乙醇/水混合物的膜分离性能最好。溶解度参数计算;还进行了吸附测定,以研究其结构性能关系。

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