Gas permeation properties of poly(urethane-urea)s containing different polyethers

被引：93

作者：

Li, Hua ^{[1
]}

Freeman, Benny D. ^{[1
]}

Ekiner, O. Max ^{[2
]}

机构：

[1] Univ Texas Austin, Dept Chem Engn, Ctr Energy & Environm Resources, Austin, TX 78758 USA

[2] Air Liquide, Delaware Res & Technol Ctr, Newark, DE 19702 USA

来源：

JOURNAL OF MEMBRANE SCIENCE | 2011年 / 369卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

Poly(urethane-urea); Carbon dioxide; Polymer membranes; Separation; Permeability; Permeation properties; Transport; SEGMENTED BLOCK-COPOLYMERS; POLY(ETHYLENE GLYCOL DIACRYLATE); FILM COMPOSITE MEMBRANES; TRANSPORT PROPERTIES; POLYMERIC MEMBRANES; CO2; SEPARATION; HARD-SEGMENT; POLYURETHANE ELASTOMERS; POLYETHYLENE OXIDE; SODIUM-CHLORIDE;

D O I：

10.1016/j.memsci.2010.11.024

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A series of poly(urethane-urea)s were synthesized using 4,4'-methylenediphenyl diisocyanate (MDI), various polyether diols, and ethylene diamine (EDA). The polyethers were poly(ethylene glycol) (PEG) 2000, poly(propylene glycol) (PPG) 2700, poly(tetramethylene ether glycol) (Terathane (R)) 2000, Terathane (R) 2900, and a mixture of PEG 2000 and Terathane (R) 2000. The polymer based on PEG 2000 is semi-crystalline at room temperature, and the others are amorphous. The fractional free volume (FFV) increases as polyether molecular weight and soft segment content increase. The permeability of these materials to He, H-2, O-2, N-2, CO2 and CH4 was measured at 35 degrees C, and gas permeability increased with increasing FFV. The physical properties and gas transport characteristics of these poly(urethane-urea)s were compared with those of rubbery networks based on crosslinked PEG and PPG. (C) 2010 Elsevier By. All rights reserved.

引用

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页码：49 / 58

页数：10

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