Grafting of Poly(ethylene imine) to Silica Nanoparticles for Odor Removal from Recycled Materials.

ABSTRACT: One of the major obstacles to the reuse of recycled plastic materials is the emanation of after-process odors from recycled polymers and composites. Typically, recycled polymers are blended with an off-odor adsorbent additive in the recycling chain to eliminate these smells. This article describes an innovative ultrasonically assisted method of grafting poly(ethylene imine) (PEI) to silica nanoparticles (SiO₂) initiated by benzoyl peroxide (BP) which acts as an odor remover. To prepare the PEI/Si, the branched PEI was grafted onto the silica surface without a coupling agent. This made the grafting process straightforward, easy and low in cost. Fourier Transform Infrared (FTIR) analysis confirmed the successful grafting of PEI to silica. The thermogravimetric analysis (TGA) indic

SUBMITTER: Cohen S 

PROVIDER: S-EPMC9268616 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature