Insights into the Enhancement of MOF/Polymer Adhesion in Mixed-Matrix Membranes via Polymer Functionalization
Tavares, Sergio Rodrigues
Kale, Vinayak Swamirao
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Physical Science and Engineering (PSE) Division
Chemical Science Program
KAUST Grant NumberA0100907613
Embargo End Date2022-06-09
Permanent link to this recordhttp://hdl.handle.net/10754/669498
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AbstractMOF-based mixed-matrix membranes (MMMs) prepared using standard routes often exhibit poor adhesion between polymers and MOFs. Herein, we report an unprecedented systematic exploration on polymer functionalization as the key to achieving defect-free MMMs. As a case study, we explored computationally MMMs based on the combination of the prototypical UiO-66(Zr) MOF with polymer of intrinsic porosity-1 (PIM-1) functionalized with various groups including amidoxime, tetrazole, and N-((2-ethanolamino)ethyl)carboxamide. Distinctly, the amidoxime-derivative PIM-1/UiO-66(Zr) MMM was predicted to express the desired enhanced MOF/polymer interfacial interactions and thus subsequently prepared and evaluated experimentally. Prominently, high-resolution transmission electron microscopy confirmed optimal adhesion between the two components in contrast to the nanometer-sized voids/defects shown by the pristine PIM-1/UiO-66(Zr) MMM. Notably, single-gas permeation measurements further corroborated the need of optimal MOF/polymer adhesion in order to effectively enable the MOF to play a role in the gas transport of the resulting MMM.
CitationCarja, I.-D., Tavares, S. R., Shekhah, O., Ozcan, A., Semino, R., Kale, V. S., … Maurin, G. (2021). Insights into the Enhancement of MOF/Polymer Adhesion in Mixed-Matrix Membranes via Polymer Functionalization. ACS Applied Materials & Interfaces. doi:10.1021/acsami.1c03859
SponsorsThe research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).
The research leading to part of these results has received funding from the King Abdullah University of Science and Technology (KAUST) under Center Partnership Fund Program (CPF 2910). This work was granted access to the HPC resources of CINES under the allocation A0100907613 made by GENCI
PublisherAmerican Chemical Society (ACS)