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首页> 外文期刊>Journal of Applied Polymer Science >Effect of stabilization temperature on gas permeation properties of carbon hollow fiber membrane
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Effect of stabilization temperature on gas permeation properties of carbon hollow fiber membrane

机译：稳定温度对碳中空纤维膜透气性能的影响

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摘要

Carbon hollow fiber membranes (CHFMs) derived from polymer blend of polyetherimide (PEI) and polyvinylpyrrolidone (PVP) were extensively prepared through stabilization under air atmosphere followed by carbonization under N_2 atmosphere. The effects of the stabilization temperature on the morphological structure, chemical structure, and gas permeation properties were investigated thoroughly by means of scanning electron microscopy, Fourier transform infrared spectroscopy, and single gas permeation system. The experiment results indicate that the transport mechanism of small gas molecules of N_2, CO_2, and CH_4 is dominated by the molecular sieving effect. Based on morphological structure and gas permeation properties, an optimum stabilization condition for the preparation of CHFM derived from PEI/PVP was found at 300°C under air atmosphere. The selectivity of ～55 and 41 for CO_2/CH_4 and CO_ 2/N_2, respectively, were obtained for CHFMs prepared at stabilization temperature of 300°C.
机译：通过在空气气氛下稳定，然后在N_2气氛下碳化，大量制备了由聚醚酰亚胺（PEI）和聚乙烯吡咯烷酮（PVP）的聚合物共混物得到的碳中空纤维膜（CHFM）。借助扫描电子显微镜，傅立叶变换红外光谱和单一气体渗透系统，深入研究了稳定温度对形态结构，化学结构和气体渗透性能的影响。实验结果表明，N_2，CO_2，CH_4气体小分子的迁移机理主要受分子筛作用的影响。根据形态结构和气体渗透特性，发现在300°C的空气气氛下，由PEI / PVP制备CHFM的最佳稳定条件。在稳定温度为300°C的条件下制备的CHFMs，分别对CO_2 / CH_4和CO_2 / N_2的选择性分别为55和41。

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