Separation of alcohol aqueous solution by pervaporation using asymmetric polyimide membrane
Separation of alcohol aqueous solution by pervaporation using asymmetric polyimide membrane
复制标题
非对称聚酰亚胺膜渗透蒸发分离酒精水溶液
DOI：
10.1088/0954-0083/7/3/004
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发表时间：
1995
影响因子：
2.1
通讯作者：
T. Nakane
中科院分区：
文献类型：
--
作者：
H. Yanagishita;D. Kitamoto;T. Nakane
通过浇铸由 25 wt% 芳香族聚酰亚胺 (PI-2080)、35 wt% N,N'-二甲基甲酰胺 (DMF) 和 40 wt% 二恶烷组成的溶液，通过相转化工艺制备非对称聚酰亚胺膜。将膜在真空烘箱中在300℃下退火3小时，并在全蒸发中测量各种醇水溶液。对于60℃的95vol.%醇水溶液，膜的分离因子为a(H2O/EtOH)=900和a(H,0/2-PrOH)=11000，通量为0.45kgm 2 ht。该膜在 60℃ 的 95 vol.% 乙醇水溶液中表现出稳定的膜性能 3 个月。
Asymmetric polyimide membranes were prepared by the phase inversion process by casting solutions composed of 25 wt% aromatic polyimide (PI-2080), 35 wt% N,N'-dimethyl formamide (DMF) and 40wt% dioxane. The membranes were annealed at 300C for 3 h in a vacuum oven and were measured for various alcohol aqueous solutions in pervaporation. The membrane exhibited separation factors of a(H20/EtOH) = 900 and a(H,0/2-PrOH)= I I000 with a flux of 0.45 kgm 2 h t for a 95 vol.% alcohol aqueous solution at 60C. The membrane showed stable membrane performance for 3 months for a 95 vol.% ethanol aqueous solution at 60"C.