聚乙二醇(PEG)对La0.7Sr0.3Co0.2Fe0.8O3−δ (LSCF 7328)中空纤维膜透氧性能的依赖研究

Q1 Chemical Engineering
Hamzah Fansuri , Alfia Dewi Masyitoh , Silvana Dwi Nurherdiana , Wahyu Prasetyo Utomo , Triyanda Gunawan , Nurul Widiastuti , Mohd Hafiz Dzarfan Othman , Ahmad Fauzi Ismail , Subaer
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引用次数: 2

摘要

为了进一步改善LSCF中空纤维膜在氧气净化应用中的性能,本工作研究了使用不同分子量为2000、3400和6000Da的聚乙二醇(PEG)作为成孔剂。通过挤压和烧结的方法成功地制备了制备良好的中空纤维膜。结果表明,PEG的加入增加了涂料悬浮液的粘度,并在1250°C下烧结后形成了恒定的不对称孔结构。PEG分子量的增加也导致膜的机械强度降低,这表明通过形成不规则孔而牺牲了指状孔。在室温下对膜的气密性进行了测试,结果表明,PEG-3400膜的氮渗透性为3.55×10−5 mol·m−2·s−1·Pa−1,气密性最好。PEG的加入也影响了膜的氧渗透,其中使用含有PEG 3400的中空纤维膜获得了6.07×10−8 mol·cm−2·s−1的最高氧渗透通量,因为存在最低的致密层厚度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A dependence study: Molecular weight of polyethylene glycol (PEG) ON La0.7Sr0.3Co0.2Fe0.8O3−δ (LSCF 7328) hollow fiber membrane for oxygen permeation

A dependence study: Molecular weight of polyethylene glycol (PEG) ON La0.7Sr0.3Co0.2Fe0.8O3−δ (LSCF 7328) hollow fiber membrane for oxygen permeation

In an effort to further improvement of LSCF hollow fiber membrane properties in oxygen purification applications, this work studied the use of polyethylene glycol (PEG) with a different molecular weights of 2000, 3400 and 6000 Da as a pore former. A well-prepared hollow fiber membrane was successfully fabricated via extrusion followed by a sintering method. The results showed that the addition of PEG increased the viscosity of the dope suspension and formed a constant asymmetric pore configuration of the membrane after sintering at 1250 °C. The increasing molecular weight of PEG also leads to a decrease in the mechanical strength of the membranes, indicating that finger-like pores were sacrificed by forming irregular pores. The gas tightness was also examined under room temperature which showed that membrane with PEG 3400 achieved the best tightness with the nitrogen permeability of 3.55 × 10−5 mol·m−2·s−1·Pa−1. The oxygen permeation of the membranes was also influenced by the addition of PEG, where the highest oxygen permeation flux of 6.07 × 10−8 mol·cm−2·s−1 was obtained using a hollow fiber membrane with PEG 3400 due to the existence of the lowest dense layer thickness.

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来源期刊
Journal of King Saud University, Engineering Sciences
Journal of King Saud University, Engineering Sciences Chemical Engineering-Fluid Flow and Transfer Processes
CiteScore
12.10
自引率
0.00%
发文量
87
审稿时长
63 days
期刊介绍: Journal of King Saud University - Engineering Sciences (JKSUES) is a peer-reviewed journal published quarterly. It is hosted and published by Elsevier B.V. on behalf of King Saud University. JKSUES is devoted to a wide range of sub-fields in the Engineering Sciences and JKSUES welcome articles of interdisciplinary nature.
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