具有不同取代基数量铁酞菁衍生物改性双极膜的性能研究  

Preparation and characterization of bipolar membrane modified by iron-phthalocyanine with different amounts of carboxyl groups

作　　者：陈丽金[1] 陈日耀[1] 胡艳玉[1] 陈震[1] 陈晓[1] 郑曦[1] 

机构地区：[1]福建师范大学环境科学与工程学院,福建福州350007

出　　处：《应用化工》2013年第4期661-664,共4页Applied Chemical Industry

基　　金：福建省科技厅重点资助项目(2012H0019);福州市科技局项目资助(2012-G-116)

摘　　要：分别用具有不同取代基数量铁酞菁衍生物加入羧甲基纤维素钠(CMC)阳离子交换膜中,制备改性的CMC/CS双极膜(BPM,CS∶壳聚糖)。结果表明,经铁酞菁改性后,阳膜的离子交换容量、亲水性和双极膜的机械性能均获得提高,双极膜的溶胀度下降。此外,改性后,铁酞菁衍生物可在双极膜中间界面层形成高荷电区,促进水解离,降低膜阻抗和槽电压。当电流密度为60 mA/cm2时,Fe2Pc2(COONa)12-CMC/CS BPM,FePc(COONa)8-C MC/CS BPM,FePc(COONa)4-CMC/CS BPM和CMC/CS BPM的膜电压分别为5.6,6.2,6.5,8.9 V。Iron phthalocyanines （Pc） with different quantities of carboxyl groups were added into earboxymethylcellulose （CMC） cation exchange membrane to prepare the modified CMC/CS bipolar membranes （BPMs,CS： chitosan）. Results showed that after modification by iron phthalocyanines, the ion exchange capacity and hydrophilicity of CMC membrane and the mechanical properties of the BPM increased, and the swelling degrees of the BPM decreased. Furthermore, a high charge density area formed in the interlayer of the BPM after modification, which sped up water dissociation, lowered the membrane impedance and the cell voltage. At the current density of 60 mA/cm2, the cell voltages of Fe2Pc2 （COONa）12-CMC/ CS BPM, FePc（COONa） 8-CMC/CS BPM, FePc（COONa） 4-CMC/CS BPM and CMC/CS BPM were 5.6, 6.2,6.5 V and 8.9 V respectively.

关 键 词：铁酞菁 改性 羧甲基纤维素 壳聚糖 双极膜 

分 类 号：O646[理学—物理化学]