Dispersion state of carbon black in polystyrene produced with different dispersion media and its effects on composite rheological properties
| Autor: | Yudai Fukunaga, Masanobu Naito, Yoshihisa Fujii, Seisuke Inada, Mitsunori Asada, Yoshihiro Tsumura, Naoya Torikai |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
010407 polymers Materials science Polymers and Plastics Carbon black Polymer 01 natural sciences Viscoelasticity 0104 chemical sciences Condensed Matter::Soft Condensed Matter chemistry.chemical_compound chemistry Rheology Percolation Materials Chemistry Particle Polystyrene Composite material Dispersion (chemistry) |
| Zdroj: | Polymer Journal. 51:275-281 |
| ISSN: | 1349-0540 0032-3896 |
| DOI: | 10.1038/s41428-018-0149-0 |
| Popis: | The dispersion state and aggregate structure of carbon black in polystyrene composites prepared by solvent casting suspensions in different dispersion media, i.e., chloroform, tetrahydrofuran, and toluene, with different particle contents and their effects on the bulk rheological properties of the composites were investigated by transmission electron microscopy, ultrasmall-angle and small-angle X-ray scattering, and dynamic viscoelasticity measurements. The macroscopic dispersion state of carbon black in the solvent-cast films was largely affected by the dispersion medium, reflecting the stability of the suspension in the polystyrene solution. The mass fractal dimension of carbon black in the polymeric matrix, which was evaluated by X-ray scattering techniques with a resolution of nanometers, tended to exhibit a higher value for the dispersion media with less carbon black dispersibility. The surface fractal dimension of carbon black in the polymer was independent of the dispersion medium and exhibited a lower value than carbon black powder due to physical adsorption of the polymer on the particle surface. The viscoelastic moduli for the melt polymer composites below and above the percolation limit varied according to the dispersion media, reflecting the difference in the macroscopic dispersion state and aggregate structure of carbon black in polystyrene. The dispersion state and aggregate structure of carbon black in polystyrene composites prepared by solvent casting suspensions in different dispersion media with different particle contents and their effects on the bulk rheological properties of the composites were investigated by transmission electron microscopy, ultrasmall-angle and small-angle X-ray scattering, and dynamic viscoelasticity measurements. The viscoelastic moduli of the melt polymer composites below and above the percolation limit varied with the dispersion medium, reflecting the difference in the macroscopic dispersion state and aggregate structure of carbon black in polystyrene. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink