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- W2347103623 abstract "Polymer-based nanocomposites incorporating porous hybrid materials is fast becoming a staple in addressing environmental and sustainability challenges. Herein we investigate the intricate dynamics underpinning the molecular interactions between the porous nanoparticles of a zeolitic metal-organic framework (ZIF-8) and a hyperelastic polymer matrix (polyurethane, PU). We fabricated novel PU/ZIF-8 mixed-matrix nanocomposite membranes (∼100 μm thickness) with up to 40 wt.% ZIF-8 nanoparticles, and characterised their quasi-static and dynamic thermo-mechanical properties via dynamic mechanical measurements, nanoindentation, thermogravimetric and tensile experiments. ZIF-8 nanoparticles significantly modify the thermo-mechanical properties of polyurethane matrix, improving overall stiffness, fracture energy, and yield strength at the cost of ductility (beyond ∼30 wt.%). Thermal stability was enhanced, likewise dynamic responses and phase changes were stabilised with increasing nanoparticle loading. Secondary molecular interactions between ZIF-8 nanoparticles and polyurethane chains are responsible for the salient thermo-mechanical and dynamic behaviour observed. Our findings may guide developments of resilient rubbery-MOF nanocomposite systems for practical applications." @default.
- W2347103623 created "2016-06-24" @default.
- W2347103623 creator A5062036455 @default.
- W2347103623 creator A5073692835 @default.
- W2347103623 date "2016-08-01" @default.
- W2347103623 modified "2023-10-17" @default.
- W2347103623 title "Dynamic molecular interactions between polyurethane and ZIF-8 in a polymer-MOF nanocomposite: Microstructural, thermo-mechanical and viscoelastic effects" @default.
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- W2347103623 doi "https://doi.org/10.1016/j.polymer.2016.05.012" @default.
- W2347103623 hasPublicationYear "2016" @default.
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