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首页> 外文期刊>Journal of Applied Polymer Science >Semi-IPN Asymmetric Membranes Based on Polyether Imide (ULTEM) and Polyethylene Glycol Diacrylate for Gaseous Separation
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Semi-IPN Asymmetric Membranes Based on Polyether Imide (ULTEM) and Polyethylene Glycol Diacrylate for Gaseous Separation

机译：基于聚醚酰亚胺（ULTEM）和聚乙二醇二丙烯酸酯的半IPN不对称膜用于气体分离

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Semi-interpenetrating polymer networks (semi-IPN) formed with commercial polyether imide (ULTEM (R), PEI) and poly (ethylene glycol) diacrylate (PEGDA) were used to make asymmetric membranes. The effect of increasing amount of PEGDA on the bulk and the gas separation properties of semi-IPN membranes were studied. The formation of IPNs was confirmed by Fourier Transform Infra Red (FT-IR) spectroscopy. The 5%. weight loss temperature decreased and the percent weight loss of the first step increased with increase in the PEGDA content, which indicated the incorporation of more poly (ethylene glycol) (PEG) segments to the semi-IPNs. The microscopic experiments revealed the change in morphology with change in PEGDA content. The Scanning electron micrographs exhibited typical finger-like voids in the sub layer, which is characteristic morphology of asymmetric membranes. The increase in PEGDA content up to 5.7 wt %, increased the CO2/N-2 selectivity of the semi-IPN after which the selectivity decreased and permeance increased. Although, the increase in the polar poly (ethylene glycol) molecules is expected to render better CO, selectivity, the performance of the membrane was found to decrease as PEGDA content exceeded 5.7% for the given ratio. (c) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 110: 3606-3615, 2008
机译：由市售的聚醚酰亚胺（ULTEM®，PEI）和聚（乙二醇）二丙烯酸酯（PEGDA）形成的半互穿聚合物网络（semi-IPN）被用于制造不对称膜。研究了PEGDA的添加量对半IPN膜的体积和气体分离性能的影响。 IPN的形成已通过傅立叶变换红外（FT-IR）光谱进行了确认。 5％。随着PEGDA含量的增加，失重温度降低，第一步失重百分数增加，这表明在半IPN中掺入了更多的聚（乙二醇）（PEG）段。显微实验揭示了随着PEGDA含量变化的形态变化。扫描电子显微照片在子层中显示出典型的手指状空隙，这是不对称膜的特征形态。高达5.7 wt％的PEGDA含量增加，提高了半IPN的CO2 / N-2选择性，此后选择性降低且渗透率增加。尽管，极性聚（乙二醇）分子的增加有望提高CO的选择性，但是发现在给定比例下，当PEGDA含量超过5.7％时，膜的性能会下降。 （c）2008 Wiley Periodicals，Inc. J Appl Polym Sci 110：3606-3615，2008

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