Abstract Polymeric membranes can be used for the energy-efficient and low-cost gas separation. However, their inability to resist high temperatures limits their use in certain industries. Some polymer membranes can be operated at some levels of the unpleasant environments, but the energy- and cost-efficiencies are offset by the necessity to severely cool hot streams. In many cases, such implementation is impossible or altogether impractical. Therefore, numerous studies have been focused on modifying polymers to create synthetic polymeric membranes which survive at high temperatures. Polymer scientists introduced many thermally stable polymers mostly based on carbocyclic and heterocyclic aromatic polymers, which exhibit enhanced thermal stability. However, the major problem with these polymers is their low processability, which is mainly due to their insolubility or high phase transition temperatures. So far, there has been little success in processing the high-temperature-resistant polymers to make membranes with acceptable separation and performance characteristics. The aim of this study is to review efforts which have been made to produce high-performance polymeric membranes with a focus on the preparation procedure; whereby, the main limitations and challenges to be faced were explored. The key factors discussed include the type of polymer, membrane preparation method, thermal analysis results and application of the prepared membranes. The primary purpose of this review is to lay out the basics for selecting polymer, solvent, additives and the appropriate preparation method to produce thermally stable polymeric membranes for gas separation. The future direction of research and development to fully exploit the potential usage of thermally stable polymeric membranes to achieve commercially viable processes was also shown.

中文翻译：

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用于先进高性能气体分离膜的热稳定聚合物

摘要 聚合物膜可用于节能、低成本的气体分离。然而，它们无法抵抗高温限制了它们在某些行业中的使用。一些聚合物膜可以在某种程度的令人不快的环境中运行，但能源和成本效率被严重冷却热流的必要性所抵消。在许多情况下，这样的实施是不可能的或完全不切实际的。因此，许多研究都集中在对聚合物进行改性以制造可在高温下使用的合成聚合物膜。聚合物科学家引入了许多热稳定聚合物，主要基于碳环和杂环芳族聚合物，它们表现出增强的热稳定性。然而，这些聚合物的主要问题是它们的加工性低，这主要是由于它们的不溶性或高相变温度。到目前为止，在加工耐高温聚合物以制造具有可接受的分离和性能特征的膜方面几乎没有成功。本研究的目的是回顾为生产高性能聚合物膜所做的努力，重点是制备过程；因此，探讨了将面临的主要限制和挑战。讨论的关键因素包括聚合物的类型、膜制备方法、热分析结果和制备的膜的应用。本综述的主要目的是阐述选择聚合物、溶剂、添加剂和适当制备方法的基础知识，以生产用于气体分离的热稳定聚合物膜。