Gas transport properties of soluble aromatic polyimides with sulfone diamine moieties
Gas transport properties of soluble aromatic polyimides with sulfone diamine moieties
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含磺二胺部分的可溶性芳香族聚酰亚胺的气体传输性能
DOI：
10.1002/app.1995.070570703
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发表时间：
1995
影响因子：
3
通讯作者：
S. Nagaoka
中科院分区：
文献类型：
--
作者：
H. Kawakami;J. Anzai;S. Nagaoka
以2，2 ′-二（3，4-二羧基苯基）六氟丙烷二酐（6 FDA）和3，3 ′-或4，4 ′-二氨基二苯砜（m-DDS或p-DDS）为原料，采用化学亚胺化法合成了芳香族聚酰亚胺。用红外光谱和核磁共振氢谱确定了酰胺酸基团的消失和酰亚胺基团的出现。所得聚酰亚胺是无定形的，可溶于有机溶剂。在35°C和10atm的压力下测定了聚酰亚胺膜对CO2、O2、N2和CH 4的气体传输性能。由于膜具有较大的气体扩散选择性，因而提高了（PCO 2 /PCH 4）和（PO 2 /PN 2）的选择性.这被认为主要是由于聚合物链的高堆积密度。John Wiley & Sons，Inc.
Aromatic polyimides derived from 2,2'-bis(3,4-dicarboxyphenyl) hexafluoropropane dianhydride (6FDA) and 3,3'- or 4,4'-diaminodiphenylsulfone (m-DDS or p-DDS) have been synthesized with a chemical imidization. The disappearance of amic acid groups and the appearance of imide groups are determined by IR and 1 H-NMR spectroscopies. The obtained polyimides are amorphous and soluble in organic solvents. The gas transport properties of the polyimide membranes to CO 2 , O 2 , N 2 , and CH 4 have been determined at 35°C and at a pressure up to 10 atm. The (PCO 2 /PCH 4 ) and (PO 2 /PN 2 ) selectivities of the membranes are augmented due to their large gas diffusivity selectivities. This is considered to be due primarily to the high packing density of polymer chain. © 1995 John Wiley & Sons, Inc.