TY - JOUR
T1 - NEXARTM-coated hollow fibers for air dehumidification
AU - Upadhyaya, Lakshmeesha
AU - Gebreyohannes, Abaynesh Yihdego
AU - Akhtar, Faheem
AU - Falca, Gheorghe
AU - Musteata, Valentina-Elena
AU - Mahalingam, Dinesh K.
AU - Almansoury, Rneem
AU - Ng, Kim Choon
AU - Nunes, Suzana Pereira
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was sponsored by King Abdullah University of Science and Technology (KAUST), grants REP/1/3988-06-01 and REP/1/3988-09-01. The authors thank Prof. Klaus-Viktor Peinemann, Dr. Jiangtao Li, Prof. William Worek, Prof. Omar Abdel Aziz and Dr. Rory Jordan for valuable discussion in the frame of the KAUST Cooling Initiative.
PY - 2020/7/22
Y1 - 2020/7/22
N2 - Air conditioning is one of the essential requirements for households as well as work stations. Dehumidification in air conditioning is the highest energy-consuming component, where membranes could play a crucial role. In this work, we propose the coating of NEXARTM, a commercial pentablock copolymer in tetrahydrofuran on polyetherimide hollow fiber support for separation of water vapor from humidified air. The block copolymer in tetrahydrofuran forms a lamellar/parallel cylindrical structure separated by equidistance during the morphological transformation process giving its unique characteristics with higher water vapor transfer efficiency. Both vacuum and sweep gas modes of membrane dehumidification strategies are investigated along with the detailed study of the morphological transformation process under a controlled environment, which is supported by comprehensive scanning electron microscopic and atomic force microscopic imaging. The membrane has shown water vapor permeance up to 9089 GPU with water vapor to nitrogen selectivity up to 3870. The membrane can reduce the relative humidity from 80% to 41% proving one of the competitive materials for membrane dehumidification.
AB - Air conditioning is one of the essential requirements for households as well as work stations. Dehumidification in air conditioning is the highest energy-consuming component, where membranes could play a crucial role. In this work, we propose the coating of NEXARTM, a commercial pentablock copolymer in tetrahydrofuran on polyetherimide hollow fiber support for separation of water vapor from humidified air. The block copolymer in tetrahydrofuran forms a lamellar/parallel cylindrical structure separated by equidistance during the morphological transformation process giving its unique characteristics with higher water vapor transfer efficiency. Both vacuum and sweep gas modes of membrane dehumidification strategies are investigated along with the detailed study of the morphological transformation process under a controlled environment, which is supported by comprehensive scanning electron microscopic and atomic force microscopic imaging. The membrane has shown water vapor permeance up to 9089 GPU with water vapor to nitrogen selectivity up to 3870. The membrane can reduce the relative humidity from 80% to 41% proving one of the competitive materials for membrane dehumidification.
UR - http://hdl.handle.net/10754/664386
UR - https://linkinghub.elsevier.com/retrieve/pii/S0376738820310279
U2 - 10.1016/j.memsci.2020.118450
DO - 10.1016/j.memsci.2020.118450
M3 - Article
SN - 0376-7388
SP - 118450
JO - Journal of Membrane Science
JF - Journal of Membrane Science
ER -