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首页> 外文期刊>Journal of Applied Polymer Science >Gas Permeation Properties of a Composite Membrane Filled with Poly(ethylene oxide) into a Porous membrane
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Gas Permeation Properties of a Composite Membrane Filled with Poly(ethylene oxide) into a Porous membrane

机译：聚环氧乙烷填充到多孔膜中的复合膜的透气性能

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摘要

The permeability coefficients of O_2,N_2, and CO_2 gases at 25deg C were examined for composite membranes that were prepared by filling poly(ethylene oxide)(PEO) with different molecular weights into a porous membrane. The permeability coefficients of O_2, N_2, and CO_2 were 2×10~(-10)-4×110~(-10),5×10~(-11)-9.5×10~(-11), and 6×10~(-10)-1×10~(-9) (cm~3STPcm/cm~2s cmHg), respectively. The higher permeability coefficients of CO_2 are explained in terms of high solubility of CO_2 in filled PEO. The permeability coefficient of CO_2 was affected by teh degree of crystallinity of PEO in the composite. On the other hand, there was little effect of crystallinity on O_2 and N_2 permeability coefficients.Some probable relationships between selectivities of O_2 to N_2 and CO_2 to N_2 and the degree of crystallinity of PEO were observed. The CO_2 gas permeability coefficients of the composite membrane for PEO50000(M_w=5×10~4) showed a marked change due to melting or crystallization of PEO.
机译：对于通过将具有不同分子量的聚环氧乙烷（PEO）填充到多孔膜中而制得的复合膜，检查了25°C下O_2，N_2和CO_2气体的渗透系数。 O_2，N_2和CO_2的渗透系数分别为2×10〜（-10）-4×110〜（-10），5×10〜（-11）-9.5×10〜（-11）和6× 10〜（-10）-1×10〜（-9）（cm〜3STPcm / cm〜2s cmHg）。根据CO_2在填充PEO中的高溶解度来解释CO_2的较高渗透系数。复合材料中PEO的结晶度影响CO_2的渗透系数。另一方面，结晶度对O_2和N_2渗透系数的影响很小。观察到O_2对N_2的选择性和CO_2对N_2的选择性与PEO的结晶度之间存在一些可能的关系。 PEO50000（M_w = 5×10〜4）复合膜的CO_2透气系数由于PEO的熔融或结晶而发生了明显变化。

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