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Multilayered PEI-based Films for CO2 Adsorption and Diffusion

Liu, Jing
http://rave.ohiolink.edu/etdc/view?acc_num=akron1367839488

Abstract Details

2013, Master of Science in Polymer Engineering, University of Akron, Polymer Science.
Polyethyleneimine (PEI) possesses a large number of amine functional groups33, which bind CO2 at 25 – 50 oC and dissociate it at 100 – 130 oC. This unique characteristic allows PEI to serve as an active molecule in solid sorbents for the thermal swing and membrane processes for CO2 separation. Fourier Transform Infrared Spectroscopy (FTIR) has been established as a powerful tool for observing and investigating the nature and concentration of CO2 adsorbed on amine sites. In-situ FTIR was used to evaluate the CO2 adsorption on PEI layers containing 1, 8, 21 and 35wt% of water. This technique was also used to determine the rate of diffusion of CO2 through multiple layers of PEI partially crosslinked with glutaraldehyde (GA). Each sequential PEI layer was prepared by increasing the degree of cross-linking with GA, generating a gradient amine concentration throughout the multiple layers thickness. Initial results show an increase of CO2 adsorption at a lower concentration of water. The multiple layered amine gradients enhanced the rate of CO2 diffusion compared to a single layer of crosslinked PEI of similar thickness. The fundamental information obtained from this study will be used to fabricate multilayer PEI-based films having rapid diffusion of CO2 and enhanced CO2 capture capacity at moderate temperatures.
Steven S.C Chuang, Dr. (Advisor)
Li Jia, Dr. (Advisor)
71 p.
Polymers

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Citations

  • Liu, J. (2013). Multilayered PEI-based Films for CO2 Adsorption and Diffusion [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1367839488

    APA Style (7th edition)

  • Liu, Jing. Multilayered PEI-based Films for CO2 Adsorption and Diffusion . 2013. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1367839488.

    MLA Style (8th edition)

  • Liu, Jing. "Multilayered PEI-based Films for CO2 Adsorption and Diffusion ." Master's thesis, University of Akron, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1367839488

    Chicago Manual of Style (17th edition)

akron1367839488
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© 2013, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.