Fe_3O_4/PIM-1磁性混合基质膜的制备及其O_2/N_2分离性能研究  

Preparation and O_2/N_2 separation performance of Fe_3O_4/PIM-1 magnetic mixed matrix membrane

作　　者：陈德强[1] 白云翔[1] 张春芳[1] 顾瑾[1] 孙余凭[1] 

机构地区：[1]江南大学食品胶体与生物技术教育部重点实验室化学与材料工程学院,无锡214122

出　　处：《膜科学与技术》2017年第4期27-32,37,共7页Membrane Science and Technology

基　　金：国家自然科学基金项目(21576114);国家科技支撑计划子课题(2014BAC08B02)

摘　　要：以自具微孔聚合物PIM-1为聚合物基质,采用溶剂挥发法制备了Fe_3O_4/PIM-1磁性混合基质膜,研究了不同Fe_3O_4添加量以及在分离过程中有无外加磁场对膜的O_2/N_2分离性能影响.结果表明,随着Fe_3O_4添加量的增加,膜的O_2渗透系数和O_2/N_2选择性均先增加后减少.磁化后混合基质膜O_2/N_2分离性能进一步提高,这可以归因于磁场和磁化粒子对O_2和N_2分子的耦合作用.当Fe_3O_4添加量为2%时,在压力为0.1 MPa、温度为25℃,磁场强度为56mT下,O_2渗透系数达到681Barrer,O_2/N_2选择性为3.32.The Fe3O4 / PIM - 1 magnetic mixed matrix membrane （ MMM ） was successfully prepared by solvent evaporation using properties of Fe3O4/PIM polymers of intrinsic microporosity PIM-1 as matrix. The O2/N2 separation 1 magnetic MMMs were investigated asa function of Fe3O4 contents and magnetic field. The results showed that O2/N2 permeability coefficient and selectivity of magnetic MMMs increased following a decline with the increasing Fe3O4 contents. After magnetization, O2/N2 separation performance of Fe3O4/PIM-1 magnetic MMM sraised further, resulting from the coupled interactions of magnetic field and magnetic nanofillers. For Fe3O4/PIM- 1 magnetic MMM with 2 % Fe3O4 contents, the permeability coefficient of O2 and O2/N2 selectivity reached 681 Barrer and 3.32 respectively in 0. 1 MPa,25 ℃, 56 milliTesla.

关 键 词：自具微孔聚合物 磁性混合基质膜 气体分离 

分 类 号：TQ051.893[化学工程]