Silver loaded aminosilane modified halloysite for the preparation of carrageenan-based functional films

The surface of the halloysite nanotubes (Hal) was modified to improve the silver ion loading capacity using (3aminopropyl)trimethoxysilane (APTMS). Surface modification of Hal was confirmed using Fourier transform infrared (FT-IR) spectroscopy and thermal gravimetric analysis (TGA). The modification of Hal using APTMS improved the silver ion adsorption capacity. The functionalized Hal was used as a nanofiller to make the carrageenan-based composite film. The carrageenan-based films with silver ion loaded APTMS-modified halloysite exhibited increased WCA, UV-light barrier, WVP, and antibacterial activity than their unmodified counterparts. The developed film with superior physical and functional properties is likely to be used for active food packaging applications.

Automated summary

By modifying the surface of halloysite nanotubes, the loading capacity for silver ions was improved, leading to the development of carrageenan-based composite films with superior properties for active food packaging applications.