Fluorescent and mechanical properties of UiO-66/PA composite membrane

The narrow use and poor mechanical properties of flexible polymers limit its further development. In this paper, the addition of a new type of MOFs material UiO-66 to the flexible polyacrylate polymer not only gives the polymer fluorescence properties but also enhances the mechanical properties of the polymer. This paper mainly studies the effects of different functional groups on the fluorescence properties of UiO-66 and the influence of the interface between UiO-66 and the polymer matrix. The experimental analysis of morphology and chemical structure showed that UiO-66-x and its composite membranes with different functional groups were successfully prepared. A series of comprehensive studies have shown that the fluorescence properties of UiO-66-x with different functional groups are different, which is mainly due to the different conjugated structure of the system. The composite film introduced with UiO-66-x not only has fluorescent properties, but also has excellent mechanical properties, thermal stability and solvent stability. The increase in mechanical properties is mainly attributed to the interaction between nanoparticles and polymers. Finally, molecular dynamics simulations are used to confirm the interaction between nanoparticles and polymers. At the same time, the current work can provide a convenient example for the application of metal organic framework (MOF) in enhancing the fluorescence and mechanical properties of polymers.