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借助引发剂过硫酸钾(KPS)分别将3种Gemini表面活性剂分子(G_(16-2-16)、G_(12-2-12)和G_(8-2-8))聚合成线性高分子聚合物,然后将上述线性聚合物长链“锁定”在交联的季铵化壳聚糖网状结构中,制备3种半互穿网络阴离子交换膜。为了考察疏水长链的长度对阴离子膜电导率和机械性能的影响,对膜的离子交换量、电导率和机械性能等特性进行考察。结果表明:疏水链越长,越有利于膜内部相分离结构的形成,团簇效果越明显,同时增强了膜结构的机械性能。当烷基链长度由8个碳增至16个碳,膜拉伸强度由17.22MPa增加到20.08MPa,70℃下,电导率由(4.11×10~(-2))S/cm增加到(5.00×10~(-2))S/cm。
Three kinds of Gemini surfactant molecules (G_ (16-2-16), G_ (12-2-12) and G_ (8-2-8)) were polymerized to linear high with potassium persulfate (KPS) Molecular polymer, and then the above-mentioned linear long-chain “locked ” in the cross-linked quaternized chitosan mesh structure, prepared three kinds of semi-interpenetrating network anion exchange membrane. In order to investigate the effect of hydrophobic long chain length on the conductivity and mechanical properties of anionic membranes, the membrane ion exchange capacity, conductivity and mechanical properties were investigated. The results show that the longer the hydrophobic chain, the more conducive to the formation of phase separation within the membrane structure, the more obvious the cluster effect, while enhancing the mechanical properties of the membrane structure. When the alkyl chain length increased from 8 to 16 carbons, the tensile strength of the film increased from 17.22 MPa to 20.08 MPa, and the electrical conductivity increased from (4.11 × 10 -2) S / cm to 5.00 × 10 ~ (-2)) S / cm.