Carbon Membranes Prepared from a Polymer Blend of Polyethylene Glycol and Polyetherimide

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• 作者：Wan Nurul Huda Wan Zainal ; Soon Huat Tan and Mohd Azmier Ahmad
• 刊名：Chemical Engineering & Technology
• 出版年：2017
• 出版时间：January, 2017
• 年：2017
• 卷：40
• 期：1
• 页码：94-102
• 全文大小：581K
• ISSN：1521-4125

文摘

Through a dip-coating technique, carbon membranes were produced from a polymer blend consisting of the thermally stable polymer polyetherimide (PEI) and the thermally labile polymer polyethylene glycol (PEG). The PEG/PEI carbon membranes were synthesized on an alumina support coated with an Al₂O₃ intermediate layer. The polymer blend ratio and carbonization temperature influenced the structure and permeation performance of the derived carbon membranes. The porosity of the PEG/PEI carbon membranes increased with higher PEG content in the blends. However, the derived carbon membranes tended to lose gas permeability with raising the carbonization temperatures. The carbon membranes were successfully optimized in order to achieve the highest CO₂/CH₄ and CO₂/N₂ selectivities.