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聚离子液体/PVDF共混离子传导膜的制备与性能研究 被引量:5

Ion Conductive Membrane with Interpenetration Network(IPN) Prepared by PVDF/Poly(Ionic Liquid)s Blend
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摘要 以研究高电导率、高稳定性的新型离子传导膜为目标,为电池领域的应用奠定基础。通过选用同时具有双键和离子交换基团的离子液体单体,能够制备聚离子液体的新型离子传导膜材料。采用溶剂法将聚偏氟乙烯(PVDF)和离子液体(ILS)共混,在加温条件下使离子液体单体之间发生聚合反应,制得高分子互穿网络结构的离子传导膜。系统研究了制膜过程的成膜温度、离子液体浓度等条件对膜电导率、拉伸强度等性能的影响。结果表明PILs/PVDF共混膜具有较高电导率和拉伸强度,离子液体含量对膜性能有显著影响。当膜中PILs和PVDF的质量比为0.6时,膜电导率为3.0×10-3 S·cm-1,拉伸强度为17.38 N·mm-2。 Ionic liquids(ILs) are organic salts with low melting point(100℃),low flammability,negligible vapor pressure,high ionic conductivity and wide electrochemical window.Polymeric ionic liquids(PILs) are a class of ionic liquids that contain polymerizable groups such as double bonds.In this article,ion conductive membrane with interpenetration network(IPN) was prepared by using the polyvinylidene fluoride(PVDF) and PILs.The conductivity of the prepared membrane depends on the adding amount of ionic liquid,and also depends on the type of added ionic liquid.In addition,the adding amount of ionic liquids has a significant effect on the tensile strength of the prepared membrane.As the mass ratio of PILs to PVDF is 0.6,the membrane conductivity reaches 3.0×10?3 S?cm?1,the tensile strength 17.38 N?mm?2.
出处 《高校化学工程学报》 EI CAS CSCD 北大核心 2011年第3期501-506,共6页 Journal of Chemical Engineering of Chinese Universities
基金 国家自然科学基金(20876086 20176112) 国家"863"课题(2007AA05Z245) 国家重点基础研究发展计划(973计划)项目(2010CB227202)
关键词 聚离子液体 聚偏氟乙烯 离子传导膜 面电阻 拉伸强度 polymeric ionic liquids PVDF ion conductive membrane area resistance tensile strength
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参考文献6

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