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Characterization and Gas Permeation Properties of Synthesized Polyurethane-Polydimethylsiloxane / Polyamide 12-b-Polytetramethylene Glycol Blend Membranes

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Abstract

Blend membranes of synthesized polyurethane (PU) based on toluene diisocyanate (TDI), polydimethylsiloxane (PDMS) and polytetramethylene glycol (PTMG) with polyamide 12-b- polytetramethylene glycol (PA12-b-PTMG) were prepared by a solution casting technique. The heterogeneous microstructures of the blend membranes (PU /PA12-b-PTMG) were characterized by Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). Gas transport properties were determined for O2, N2, CH4, and CO2 gases and the obtained permeabilities were correlated with polymer properties and morphology of the membranes. Comparison of the results with that of the pure PU membrane indicates that the blend membranes had higher permeability to CO2, but lower permeability to O2, N2 and CH4 gases, and, therefore, had higher values of CO2/N2 and CO2/CH4 ideal gas pair selectivities. The blend membrane with 20 % (wt) PA12-b-PTMG showed the highest CO2 permeability (≈105 Barrer) compared to the PU and other blend membranes. In the blend membranes with 5–20 % (wt) PA12-b-PTMG contents an enhancement of CO2/CH4 (≈10) and CO2/N 2 (≈52) selectivities was observed. The experimental permeabilities of the blend membranes were compared with the calculated permeabilities based on a modified additive logarithmic model.

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Authors and Affiliations

  1. Polymer group, Chemical Engineering Department, Tarbiat Modares University, Tehran, Iran

    Eshagh Vakili & Behnam Ghalei

  2. Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshida-Honmachi, Sakayo-ku, Kyoto, 606-8501, Japan

    Mohammad Ali Semsarzadeh & Behnam Ghalei

  3. Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran

    Morteza Khoshbin & Hadi Nasiri

Authors
  1. Eshagh Vakili
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  2. Mohammad Ali Semsarzadeh
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  3. Behnam Ghalei
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  4. Morteza Khoshbin
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  5. Hadi Nasiri
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Correspondence to Behnam Ghalei.

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Vakili, E., Semsarzadeh, M.A., Ghalei, B. et al. Characterization and Gas Permeation Properties of Synthesized Polyurethane-Polydimethylsiloxane / Polyamide 12-b-Polytetramethylene Glycol Blend Membranes. Silicon 8, 75–85 (2016). https://doi.org/10.1007/s12633-015-9312-9

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  • DOI: https://doi.org/10.1007/s12633-015-9312-9

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