Crystalline phase of inorganic montmorillonite/poly(vinylidene fluoride) nanocomposites: influence of dispersion of nanolayers
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Chao Fu
Abstract
Inorganic montmorillonite (MMT)/poly(vinylidene fluoride) nanocomposites were prepared by two methods: co-precipitation and solution casting. The effect of preparation methods and thermal treatment on crystalline phase was investigated by Fourier transform infrared spectroscopy and differential scanning calorimetry tests. The isothermal crystallization process was observed with polarized optical microscopy. It was found that the solution-casting method was more effective than the co-precipitation method in inducing the polar phase in the melt-isothermal crystallization process. The addition of inorganic MMT by the solution-casting method without further thermal treatment promoted the β-phase crystallization. The inorganic MMT significantly improved the γ phase of the solution-cast samples in the melt-recrystallization process. The degree of dispersion of inorganic MMT influenced the relative content of the polar phase and the crystallinity of the samples in the same crystallization conditions, i.e. the preparation method and the thermal treatment. The effect of dispersion on crystallization kinetics was also studied to verify the enhancement of finely dispersed nanolayer clusters on the γ phase.
Funding source: National Science Foundation
Award Identifier / Grant number: 21504091
Funding statement: This work was supported by the National Science Foundation for Young Scientists of China (grant no. 21504091).
Acknowledgments:
This work was supported by the National Science Foundation for Young Scientists of China (grant no. 21504091).
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©2017 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
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Artikel in diesem Heft
- Frontmatter
- Review
- Characterization of polymeric shape memory materials
- Original articles
- Reworkable layered silicate-epoxy nanocomposites: synthesis, thermomechanical properties and combustion behaviour
- Crystalline phase of inorganic montmorillonite/poly(vinylidene fluoride) nanocomposites: influence of dispersion of nanolayers
- Effects of epoxidized natural rubber as a compatibilizer on latex compounded natural rubber-clay nanocomposites
- Preparation and mechanical properties of poly(p-phenylene sulfide) nanofiber sheets obtained by CO2 laser supersonic multi-drawing
- Fabrication of mixed matrix poly(phenylene ether-ether sulfone)-based nanofiltration membrane modified by Fe3O4 nanoparticles for water desalination
- Tailoring PES membrane morphology and properties via selected preparation parameters
- Preparation and characterization of pure and copper-doped PVC films
- Study on preparation and properties of carbon nanotubes/hollow glass microspheres/epoxy syntactic foam
- Processing of polycaprolactone and hydroxyapatite to fabricate graded electrospun composites for tendon-bone interface regeneration
