Effect
of Functionalized Graphene Oxide with Organophosphorus
Oligomer on the Thermal and Mechanical Properties and Fire Safety
of Polystyrene
- Publication date
- Publisher
Abstract
A novel
organophosphorus oligomer was synthesized to functionalize
graphene oxide. Subsequently, the functionalized graphene oxide (FGO)
was incorporated into polystyrene (PS) to enhance the integration
properties of the matrix. The effect of FGO on the thermal properties,
fire safety, and mechanical properties of PS nanocomposites was investigated.
The results showed that the introduction of FGO significantly increased
the maximum decomposition temperature (<i>T</i><sub>max</sub>) (25 °C increase), reduced the total heat release (20.8% reduction),
and peak heat release rate (38.2% reduction) of PS. In addition, the
thermogravimetric analysis/infrared spectrometry analysis results
indicated that the amount of organic volatiles and toxic carbon monoxide
of PS was remarkably reduced. The physical barrier effect of FGO and
the synergistic effects between the organophosphorus oligomer and
FGO were the main causations for these properties improvements. Homogeneous
dispersion of FGO into the polymer matrix improved the mechanical
properties of FGO/PS nanocomposites, as demonstrated by tensile tests
results
