Influence of preparation conditions on structural and dielectric properties of PVDF–MoS2 nanotubes composite films
| Autor: | Vid Bobnar, Ana Varlec, Maja Remškar, Andreja Eršte |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Scanning electron microscope Organic Chemistry Composite number 02 engineering and technology Dielectric Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Dielectric response 0104 chemical sciences chemistry.chemical_compound symbols.namesake chemistry Materials Chemistry symbols Composite material 0210 nano-technology Porosity Raman spectroscopy Fluoride |
| Zdroj: | Journal of Polymer Research. 23 |
| ISSN: | 1572-8935 1022-9760 |
| DOI: | 10.1007/s10965-016-0930-8 |
| Popis: | Poly(vinylidene fluoride) composite films with MoS2 nanotubes were prepared from solutions using the doctor blade method and dried under various temperatures. While FTIR-ATR and Raman spectroscopy have revealed that composite films dried at room temperature are homogeneous and crystallize mainly in the γ-phase, a decrease in porosity upon addition of MoS2 has been observed using scanning electron microscopy. Dielectric investigations revealed (i) a decrease from e’ ∼ 7 in pure polymer to e’ ∼ 4 in composite with 1 wt% of MoS2, and (ii) a slight increase in e’ and σ’ values upon further addition of MoS2. Films dried at 110 °C were heterogeneous and FTIR-ATR has shown an increase in α-phase content upon addition of 1 wt% of MoS2. In this case, high values of e’ ∼ 10 that increased slightly upon increasing amount of MoS2 in the film have been measured. By showing a direct relation between structure and dielectric response, it is suggested that the dielectric properties of poly(vinylidene fluoride)–MoS2 nanotubes composites can be tailored by changing the preparation conditions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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