Polymers
Soft polymers wet UiO-66 without interfacial voids
Open access · cc by · source: Europe PMC
MD shows flexible PVDF and PEG fill UiO-66 surface pockets; rigid PIM-1 and PS leave microvoids and fail as 70 wt% films.
Key findings
PIM-1/PS interfaces have microvoids (up to 13 Å and 8 Å) and long recovery distances (z-length A 15 and 9 Å). PVDF and PEG show no voids, chain-end pore penetration, and H-bonds at 2.0 vs 1.7 Å. PEG Young's modulus more than doubles at 70 wt% MOF, but N2 area collapses; PVDF keeps MOF porosity.
Methodology
Authors built a hydrated {101} UiO-66 slab, equilibrated PIM-1, PS, PVDF and PEG against it, and made 70–80 wt% PEG MMMs compared with PVDF, PS and PIM-1 films.
Limitations
No gas-separation permeance on the new PEG MMMs; PEG pore blocking is inferred from BET, not in situ pore tomography; only one MOF topology was modelled.
How this study connects
Role on claims
Each row is a claim on a concept or method page where this paper supports, challenges, or qualifies the statement. Roles are hand-checked — not a model guess.
MD shows flexible PVDF and PEG fill UiO-66 surface pockets; rigid PIM-1 and PS leave microvoids and fail as 70 wt% films.
Evidence for the claim as stated.
Related papers in this topic
Same topic cluster — not a recommendation engine.