Preparation of SPEEK/PSI semi-interpenetrating network blend membrane and its CO<sub>2</sub> separation

GAO Yin; WANG Yonghong; ZHANG Xinru; LI Jinping; LING Jun

doi:10.11949/0438-1157.20200462

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Preparation of SPEEK/PSI semi-interpenetrating network blend membrane and its CO₂ separation

Material science and engineering\, nanotechnology | 更新时间：2026-07-24

- Preparation of SPEEK/PSI semi-interpenetrating network blend membrane and its CO₂ separation
- CIESC Journal Vol. 71, Issue 12, Pages: 5813-5820(2020)
- 作者机构：
  
  1.太原理工大学化学化工学院，山西太原 030024
  2.气体能源高效清洁利用山西省重点实验室，山西太原 030024
  3.云南中烟工业有限责任公司技术中心，云南昆明 650231
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20200462
  CLC： TQ 028.8
- Received：30 April 2020，
  
  Revised：2020-06-09，
  
  Online First：17 December 2020，
  
  Published：05 December 2020
- 稿件说明：
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高殷, 王永洪, 张新儒, 李晋平, 凌军. SPEEK/PSI半互穿网络共混膜的制备及其CO₂分离研究[J]. 化工学报, 2020, 71(12): 5813-5820 DOI: 10.11949/0438-1157.20200462.

GAO Yin, WANG Yonghong, ZHANG Xinru, LI Jinping, LING Jun. Preparation of SPEEK/PSI semi-interpenetrating network blend membrane and its CO₂ separation[J]. CIESC Journal, 2020, 71(12): 5813-5820 DOI: 10.11949/0438-1157.20200462.
高殷, 王永洪, 张新儒, 李晋平, 凌军. SPEEK/PSI半互穿网络共混膜的制备及其CO₂分离研究[J]. 化工学报, 2020, 71(12): 5813-5820 DOI: 10.11949/0438-1157.20200462. DOI：

GAO Yin, WANG Yonghong, ZHANG Xinru, LI Jinping, LING Jun. Preparation of SPEEK/PSI semi-interpenetrating network blend membrane and its CO₂ separation[J]. CIESC Journal, 2020, 71(12): 5813-5820 DOI: 10.11949/0438-1157.20200462. DOI：

摘要

为了获得高性能的气体分离膜，实现烟道气中CO

高效分离回收，以磺化聚醚醚酮（SPEEK）和聚琥珀酰亚胺（PSI）为原料，己二胺为交联剂，原位交联反应制备富含氨基的半互穿网络共混膜，在膜内构建CO

传递通道和亲和位点，并采用红外光谱对共混膜的结构进行表征。研究水含量、PSI用量和进料气压力对膜气体分离性能的影响，在混合气条件下考察其气体分离性能和长时间运行稳定性。研究结果表明：SPEEK与PSI两相界面相容性较好，它们之间存在较强的相互作用，且呈半互穿网络微结构；PSI含量为60%（质量）时，纯气和混合气条件下CO

渗透性分别为652和601 Barrer，对应的CO

选择性为67.6和60.3，优于纯SPEEK膜，且超过2008年的Robeson上限；共混膜运行360 h后，CO

渗透性和CO

选择性仍然稳定。这主要是因为SPEEK与PSI形成富含氨基的半互穿网络微结构后，一方面提供了CO

促进传递载体；另一方面，增强了共混膜的保水性能，形成大量CO

传递水通道。

Abstract

To obtain high-performance gas separation membranes and realize high-efficiency separation and recovery of CO

in flue gas

the amino-rich semi-interpenetrating network blend membranes were prepared by

in-situ

crosslinking reaction

which provided CO

transport channels and affinity sites. Sulfonated poly(ether ether ketone) (SPEEK) and polysuccinimide (PSI) were used as

raw materials

and hexamethylenediamine was crosslinking agent. The structure of the blend membranes was characterized by Fourier-transform infrared spectroscopy. The effects of water content

PSI dosage and feed gas pressure on the gas separation performance were studied

and its gas separation performance and the long-time stability were investigated under mixed gas conditions. The results showed that SPEEK and PSI have a good compatibility

and there is a strong interaction between them

which exhibited the semi-interpenetrating network microstructure in the membranes. When the PSI loading is 60%(mass)

the CO

permeability of pure gas and mixed gas are 652 and 601 Barrer

respectively

and the corresponding CO

selectivity is 67.6 and 60.3

which is better than that in pristine SPEEK membrane

surpassing 2008 Robeson upper bound. The CO

permeability and CO

selectivity are still stable after 360 h durability test of SPEEK/PSI-60 blend membrane. This is mainly due to the formation of the amino-rich semi-interpenetrating network microstructure between SPEEK and PSI

which not only provides CO

facilitated transport carriers

but also enhances the water retention performance of the blend membranes and forms a large number of CO

transport water channels.

关键词

Keywords

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⁰

Preparation of SPEEK/PSI semi-interpenetrating network blend membrane and its CO2 separation

DOI：10.11949/0438-1157.20200462

摘要

Abstract

关键词

Keywords

references

Preparation of SPEEK/PSI semi-interpenetrating network blend membrane and its CO₂ separation