TY - JOUR
T1 - Insights into the Enhancement of MOF/Polymer Adhesion in Mixed-Matrix Membranes via Polymer Functionalization
AU - Carja, Ionela-Daniela
AU - Tavares, Sergio Rodrigues
AU - Shekhah, Osama
AU - Ozcan, Aydin
AU - Semino, Rocio
AU - Kale, Vinayak Swamirao
AU - Eddaoudi, Mohamed
AU - Maurin, Guillaume
N1 - KAUST Repository Item: Exported on 2021-06-11
Acknowledged KAUST grant number(s): A0100907613
Acknowledgements: The research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).
PY - 2021/6/9
Y1 - 2021/6/9
N2 - MOF-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.
AB - MOF-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.
UR - http://hdl.handle.net/10754/669498
UR - https://pubs.acs.org/doi/10.1021/acsami.1c03859
U2 - 10.1021/acsami.1c03859
DO - 10.1021/acsami.1c03859
M3 - Article
C2 - 34105948
SN - 1944-8244
JO - ACS Applied Materials & Interfaces
JF - ACS Applied Materials & Interfaces
ER -