A novel acrylonitrile–butadiene–styrene/poly(ethylene glycol) membrane: preparation, characterization, and gas permeation study

Abstract

Polymeric membranes were prepared by blending different grades of poly(ethylene glycol) (PEG) as the added polymer with acrylonitrile–butadiene–styrene as the backbone structure. The membranes were characterized by Fourier transform infrared, X‐ray diffractometry, dynamic mechanical thermal analysis, differential scanning calorimetry, and scanning electron microscopy. Furthermore, the gas permeation and separation properties of CO2/CH4 were studied. In addition, the effect of pressure (1–8 bar) and the effect of PEG content (0–40 wt%) on CO2 and CH4 permeability/selectivity were investigated. The results showed that, in more cases, with the introduction of PEG molecules, CO2/CH4 selectivity increases without significant changes in CH4 permeability, indicating that the incorporation of intermolecular interaction is suitable for the separation of gas pairs with no molecular size domination but the solution–diffusion. From the viewpoint of gas separation applications, the resultant data are in the commercially attractive region. Copyright © 2011 John Wiley & Sons, Ltd.

Preparation and characterization of Matrimid® 5218 based binary and ternary mixed matrix membranes for CO2 separation

“…The reduction in CH 4 permeability is attributed to (1) chain rigidification of polymer near the bulk of zeolite, which remarkably reduces the penetration of gas molecules on that region, (2) partial pore blockage of zeolites by polymer chains, which occurs when the polymer chains penetrate in to the zeolite pores and obstruct them partially (Bastani et al, 2013;Li et al, 2005) and (3) the slower diffusion of large gases such as CH 4 in zeolite channels compared with polymer chains (Zhang et al, 2008;Jia et al, 1991). All these factors make CH 4 as a less adsorbable and condensable gas (d KT,CH4 = 3.8 Å, T c,CH4 = 191 K) which permeated more slowly compared with CO 2 (d KT,CO2 = 3.3 Å, T c,CO2 = 304 K) which led to a higher selectivity (Ebadi Amooghin et al, 2010;Sanaeepur et al, 2012;Xiao et al, 2009). Additionally, considerable increase in CO 2 permeability can be attributed to the more interactions of polar CO 2 molecules with polar surface of calcined ZSM-5.…”

Preparation and characterization of acrylonitrile–butadiene–styrene/poly(vinyl acetate) membrane for CO2 removal

“…However, its good mechanical characteristics allows preparing a self-existence dense gas separation membrane [21,22]. Therefore, in our previous works, non-porous membranes prepared by blending ABS/PEG were examined in gas permeation studies, and a favorite permselectivity behavior was obtained [23,24].…”

Gas uptake of 3D printed acrylonitrile butadiene styrene using a vacuum apparatus designed for absorption and desorption studies

“…Diffusion coefficients for atmospheric gases such as N 2 and O 2 at 20 °C, for example, have been measured to be 0.889 × 10 −8 cm 2 /s and 3.33 × 10 −8 cm 2 /s, respectively. 2 If these gases were present in the ABS, it would have taken longer for them to desorb than H 2 O; yet significant signals of these gases were not seen in the RGA trace. We anticipate smaller uncertainties for future studies which involve single gases because the gas composition will be known.…”

“…Sorption, diffusion, and permeation constants are known for ABS. 1,2 Measurements on ABS also give us a good baseline for planned future studies on other 3-D printed materials, particularly composites. For example, researchers are presently experimenting with 3-D printed ABS containing inorganic TiO 2 nanoparticles to enhance various mechanical and chemical properties.…”