Unravelling the role of poly(methyl methacrylate) (PMMA) molecular weight in poly(vinylidene fluoride) (PVDF)/PMMA/Expanded graphite (ExGr) blend nanocomposites: Insights into morphology, thermal behavior, electrical conductivity, and wetting property
Article
Augustin, Nikhitha, Muraliharan, Pranesh, Sabu, Aleena, Senthilkumar, Kanya Koothanatham, Annamalai, Pratheep Kumar Annamalai and Ramanujam, Ramanujam Brahmadesam Thoopul Srinivasa. 2024. "Unravelling the role of poly(methyl methacrylate) (PMMA) molecular weight in poly(vinylidene fluoride) (PVDF)/PMMA/Expanded graphite (ExGr) blend nanocomposites: Insights into morphology, thermal behavior, electrical conductivity, and wetting property." Journal of Thermoplastic Composite Materials. 37 (8), pp. 2527-2570. https://doi.org/10.1177/08927057241238203
Article Title | Unravelling the role of poly(methyl methacrylate) (PMMA) molecular weight in poly(vinylidene fluoride) (PVDF)/PMMA/Expanded graphite (ExGr) blend nanocomposites: Insights into morphology, thermal behavior, electrical conductivity, and wetting property |
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ERA Journal ID | 4954 |
Article Category | Article |
Authors | Augustin, Nikhitha, Muraliharan, Pranesh, Sabu, Aleena, Senthilkumar, Kanya Koothanatham, Annamalai, Pratheep Kumar Annamalai and Ramanujam, Ramanujam Brahmadesam Thoopul Srinivasa |
Journal Title | Journal of Thermoplastic Composite Materials |
Journal Citation | 37 (8), pp. 2527-2570 |
Number of Pages | 44 |
Year | 2024 |
Publisher | SAGE Publications Ltd |
Place of Publication | United Kingdom |
ISSN | 0892-7057 |
1530-7980 | |
Digital Object Identifier (DOI) | https://doi.org/10.1177/08927057241238203 |
Web Address (URL) | https://journals.sagepub.com/doi/10.1177/08927057241238203 |
Abstract | Poly(vinylidene fluoride) (PVDF) based conducting polymer composites with carbon nanomaterials can be used for mechanical energy harvesting through piezoelectric or triboelectric effect. This study aims to investigate the influence of PMMA molecular weight on the electrical, thermal, and wetting properties of PVDF/40 wt.% PMMA blend nanocomposites reinforced with expanded graphite (ExGr). The blend nanocomposites with 40 wt.% PMMA have been prepared by solution blending method by using two different molecular weights of PMMA whose melt flow indices are 2 g/10 min and 2.3 g/10 min. The coexistence of the electroactive gamma and non-polar alpha phases of PVDF in the blend nanocomposites has been confirmed by X-ray diffraction, Fourier transform infrared spectroscopy and differential scanning calorimetry analyses. While overall crystallinity (%) of low molecular weight PMMA employed blend nanocomposites is lower than that of high molecular weight PMMA blended nanocomposites, the electroactive gamma phase has been found to increase in the former blend nanocomposites. The dispersion of graphite nanosheets has been observed to be better in high molecular weight PMMA employed blend nanocomposites which results in higher electrical conductivity. Impedance analysis of PVDF-40 wt.% PMMA-2 wt.% ExGr blend nanocomposite with high molecular weight PMMA results in enhanced interjunction capacitance (74.5 pF) in comparison to low molecular weight PMMA mixed blend nanocomposites (68 pF). Water contact angle (WCA) increases with molecular weight of PMMA and ExGr loading level. Thermogravimetric analysis has shown that the char content (above 500°C) is slightly higher for the blend with low molecular weight PMMA than with high molecular weight PMMA. |
Keywords | blend nanocomposites; Poly(vinylidene fluoride); poly(methyl methacrylate); expanded graphite; blend nanocomposites |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Amrita School of Physical Sciences Coimbatore, India |
Centre for Future Materials | |
School of Agriculture and Environmental Science |
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https://research.usq.edu.au/item/z845q/unravelling-the-role-of-poly-methyl-methacrylate-pmma-molecular-weight-in-poly-vinylidene-fluoride-pvdf-pmma-expanded-graphite-exgr-blend-nanocomposites-insights-into-morphology-thermal-behavior
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