Abstract
The sulfur on the sulfur-assisted reduced graphene oxide (SrGO) surface provides the origin of poly(phenylene sulfide) PPS-grafting via SNAr mechanism. In-situ polymerization from sulfur on SrGO afforded surface modification of SrGO, resulting in enhanced dispersibility in PPS. The tensile strength, electrical and thermal conductivities, and flame retardancy of PPS-coated SrGO were efficiently enhanced using highly concentrated SrGO and masterbatch (MB) for industrial purposes. Three-dimensional X-ray microtomography scanning revealed that diluting MB in the PPS resin afforded finely distributed SrGO across the PPS resin, compared to the aggregated state of graphene oxide. For the samples after dilution, the thermal conductivity and flame retardancy of PPS/SrGO are preserved and typically enhanced by up to 20%. The proposed PPS/SrGO MB shows potential application as an additive for reinforced PPS due to the ease of addition during the extrusion process.
Highlights
PPS is an engineering plastic that displays high chemical and thermal resistances and flame retardancy [1–5]
Of graphene oxide (GO), synthesized using various reducing agents, such as hydrazine, demonstrated an excellent dispersibility, enhanced electrical conductivity, and flame retardancy when compared to reduced graphene oxide [24,25]
sulfur-assisted reduced graphene oxide (SrGO) was well-dispersed in the matrix when compared to the thermally reduced graphene oxide (T-rGO)
Summary
PPS is an engineering plastic that displays high chemical and thermal resistances and flame retardancy [1–5]. The development of PPS composites using carbon nanotubes or metals with high thermal or electrical conductivities has been studied [10–17] These approaches are typically conducted through simple melt blending with components [18–20]. Of graphene oxide (GO), synthesized using various reducing agents, such as hydrazine, demonstrated an excellent dispersibility, enhanced electrical conductivity, and flame retardancy when compared to reduced graphene oxide (rGO) [24,25]. SrGO was well-dispersed in the matrix when compared to the thermally reduced graphene oxide (T-rGO) This allows for the preserved or enhanced physical properties of the diluted sample compared to the as-synthesized sample. SrGO as MB for the mass production of PPS with improved physical properties
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