Mergen, Omer BahadirArda, ErtanEvingur, Gulsen Akin2024-06-122024-06-1220200021-99831530-793Xhttps://doi.org/10.1177/0021998319859053https://hdl.handle.net/20.500.14551/23229In this study, we have investigated and compared electrical, optical, and mechanical properties of polystyrene thin films with added multi-walled carbon nanotube and carbon mesoporous. Surface conductivity (sigma), scattered light intensity (I-sc), and all the mechanical parameters of these composites have increased with increasing the content of carbon filler (multi-walled carbon nanotube or carbon mesoporous) in the polystyrene composites. This behavior in electrical, mechanical, and optical properties of the polystyrene/carbon fiber composites has been explained by classical and site percolation theory, respectively. The electrical percolation thresholds (R-sigma) were determined to be 8.0 wt% for polystyrene/multi-walled carbon nanotube and 25.0 wt% for polystyrene/carbon mesoporous composites. The optical percolation thresholds were found to be R-op = 0.8 wt.% for polystyrene/multi-walled carbon nanotube and R-op = 3.0 wt.% for polystyrene/carbon mesoporous composites. For the polystyrene/carbon mesoporous composite system, it was determined that the mechanical percolation threshold occurred at lower R values than the polystyrene/multi-walled carbon nanotube composite system. The electrical (beta(sigma)), optical (beta(op)), and mechanical (beta(m)) critical exponents have been calculated for both of the polystyrene/carbon fiber composites and obtained as compatible with used percolation theory.en10.1177/0021998319859053info:eu-repo/semantics/closedAccessPolystyrene CompositesPercolation ThresholdCritical ExponentMechanical PercolationSpin CoatingPolymer CompositesPhysical-PropertiesNanocompositesGrapheneConductivityFabricationThresholdSurfaceBlackEnhancementArticle5413144Q3WOS:0004975382000032-s2.0-85068343786Q2