Rheology of Polytriazole/ZIF-8 Solutions and Dynamics of Mixed-Matrix Composite Films

Adhesion between fillers and a polymeric matrix is an essential characteristic for mixed-matrix membranes molecular separation to avoid defects cavities that would decrease selectivity. We demonstrate here how solution rheology can be excellent tool identity polymer–filler pairs with strong interaction. The investigated system was polytriazole without hydroxyl functionalization (PTA-OH PTA) ZIF-8. ZIF-8/PTA-OH forms stable gels even small filler content, which under increasing shear rates different temperatures, while analogous systems OH do not gel. investigations were supported by spectroscopic methods, electron microscopy, dynamic mechanical analysis of the final solid film. While ZIF contents lead sensitive changes in viscosity, only minor Fourier transform infrared NMR spectra detected same system. good adhesion PTA-OH ZIF-8 could seen PTA/ZIF-8 composites provided films poor matrix–filler undesired cavities. methods described this work extended as useful tools development such applied large variety currently available metal–organic frameworks polymers.