Plasticized PVC graphene nanocomposites: Morphology, mechanical, and dynamic mechanical properties
| Autor: | Nandakumar Kalarikkal, K.P. Pramoda, M. R. Gopinathan Nair, H. Akhina, Sabu Thomas, Tan Hui Ru, Lekshmi Kailas |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Polymers and Plastics Scanning electron microscope 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention symbols.namesake chemistry.chemical_compound law Materials Chemistry Composite material chemistry.chemical_classification Nanocomposite Graphene General Chemistry Polymer Dynamic mechanical analysis 021001 nanoscience & nanotechnology 0104 chemical sciences Polyvinyl chloride chemistry symbols 0210 nano-technology Glass transition Raman spectroscopy |
| Zdroj: | Polymer Engineering & Science. 58:E104-E113 |
| ISSN: | 0032-3888 |
| Popis: | Improving the properties of polyvinyl chloride matrix by the incorporation of carbonaceous filler by melt mixing is an unusual thought in the polymer research. Here we incorporated reduced graphene oxide (RGO) as a filler into plasticized polyvinyl chloride (PPVC) matrix by melt mixing, an eco-friendly method. The effect of addition of filler in the morphology of the PPVC nanocomposites was analyzed by Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Atomic Force Microscopy (AFM) and Raman spectroscopy. The mechanical response of the nanocomposites to an applied stress was studied. A 50% improvement in mechanical properties was obtained at a low filler loading. A decrease in elongation was observed at higher RGO loading. The dynamic mechanical analysis (DMA) of the nanocomposites indicated an increase in glass transition temperature of the PVC up on the addition of RGO. This has confirmed the confinement of PVC chains at the graphene surface. As a result, the storage modulus of the nanocomposites showed an increase up on the addition of the nanofiller. Theoretical values of the storage modulus were calculated using various theoretical equations. The effectiveness of filler on the storage modulus is estimated and is found to be consistent with the results obtained experimentally. POLYM. ENG. SCI., 2017. © 2017 Society of Plastics Engineers |
| Databáze: | OpenAIRE |
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