Synthesis and CO2 separation of novel polyurethane membranes containing urea linkages

被引：4
作者：
Zheng, Yayun [1 ]
Hu, Yaofang [1 ]
Yang, Xing [1 ]
Yuan, Meng [1 ]
Zhang, Jie [1 ]
Zhang, Yaodong [1 ]
Luo, Jujie [1 ]
机构：
[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2019年 / 136卷 / 27期
基金：
中国国家自然科学基金;
关键词：
differential scanning calorimetry (DSC); membranes; polyurethane; separation techniques; thermogravimetric analysis (TGA); GAS PERMEATION PROPERTIES; STRUCTURAL CHARACTERISTICS; PERMEABILITY; ENHANCEMENT; SEGMENTS; URETHANE; CAPTURE;
D O I：
10.1002/app.47723
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
We synthesized novel polyurethane (PU) membranes from isophorone diisocyanate (IPDI), poly(ethylene glycol) (PEG) with a molecular weight of 2000, aminopropyl-terminated poly(dimethyl siloxane) (PDMS) with a molecular weight of 2000, and 1,4-butanediol (BDO) via a two-step polymerization. The structure of each synthesized membrane was studied through Fourier transform infrared spectroscopy and gel permeation chromatography. The effect of the thermal behavior was determined by differential scanning calorimetry and thermogravimetric analysis. The gas-permeability characteristics of the PU membranes were then tested for a single gas. The results show that the permeability of CO2 (P-CO2) gradually increased with PDMS content. Among these PU membranes, PU-d (PEG/PDMS=1:1, PEG/PDMS/IPDI/BDO=1:3:2) showed the best P-CO2 (132.6 Barrer) at 25 degrees C and 1 bar pressure. The gas-permeability coefficients of each PU membrane at different operating temperatures were investigated, and the results show that P-CO2 reached 302.6 Barrer at 65 degrees C and 1 bar. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47723.
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页数：9
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