Graphene/polymer nanocomposite degradation by ultraviolet light: The effects of graphene nanofillers and their potential for release.

ABSTRACT: The ultraviolet (UV)-induced degradation of graphene/polymer nanocomposites was investigated in this study. Specifically, the effect of few-layer graphene nanofillers on the degradation of a thermoplastic polyurethane (TPU) and the release potential of graphene from the degraded nanocomposite surfaces were assessed. Graphene/TPU (G/TPU) nanocomposites and neat TPU were UV-exposed under both dry and humid conditions in the NIST SPHERE, a precisely controlled, high intensity UV-weathering device. Neat TPU and G/TPU were characterized over the time course of UV exposure using color measurements and infrared spectroscopy, for appearance and chemical changes, respectively. Changes in thickness and surface morphology were obtained with scanning electron microscopy. A new fluorescence quenching m

SUBMITTER: Goodwin DG 

PROVIDER: S-EPMC10021000 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature