Zeolite was successfully modified by conventional synthetic route. Polyethylene glycol was employed for surface modification of zeolite. The surface of zeolite exhibited therefore hydrophobic properties. Less than 5 wt% of modified zeolites with uniform size and shape were integrated into polypropylene matrix. Mechanical properties of composite exhibited the similar trend compare to neat polypropylene. Oxygen transmission rate and water vapor transmission rate were evaluated and it exhibited the strong potential to be a good candidate material in active packaging.
Toommee, S., & Pratumpong, P. (2018). PEG-template for surface modification of zeolite: A convenient material to the design of polypropylene based composite for packaging films. Results in Physics, 9, 71–77. https://doi.org/10.1016/j.rinp.2018.02.006