The sustainable recycling of polyvinylidene fluoride membrane for tribological application

Liang, Lifen; Ma, Yalong; Ji, Xianbing; Ma, Jizhong; Zhang, Wenli; Song, Laizhou

doi:10.1002/app.54287

Cited by 2 publications

(1 citation statement)

References 49 publications

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“…The resulting composites exhibit tribological properties that are akin to those made from virgin materials, showcasing the feasibility and efficiency of this recycling approach. The successful application of these recycled polymers in lubrication systems not only contributes to reducing environmental impact, but also opens new avenues for cost-effective and eco-friendly material innovations [105,113]. These recycling methods serve as a testament to the principles of circular economy and the philosophy of cradle-to-cradle in the materials industry, reimagining waste not as an endpoint, but as the genesis for crafting cutting-edge, eco-conscious materials.…”

Section: Pfas Recovery and Recyclingmentioning

confidence: 99%

Forever Chemicals, Per-and Polyfluoroalkyl Substances (PFAS), in Lubrication

Dias,

Bons,

Kumar

et al. 2024

Lubricants

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Per- and polyfluoroalkyl substances (PFAS), also known as forever chemicals, exhibit exceptional chemical stability and resistance to environmental degradation thanks to their strong C-F bonds and nonpolar nature. However, their widespread use and persistence have a devastating impact on the environment. This review examines the roles of PFAS in tribological applications, specifically in lubricants and lubricating systems. This article focuses on conventional and advanced lubricants, including ionic liquids (ILs) and their use in modern automotive vehicles. The objective of this paper is to provide a comprehensive overview of the adverse impacts of PFAS whilst acknowledging their outstanding performance in surface coatings, composite materials, and as additives in oils and greases. The pathways through which PFAS are introduced into the environment via lubricating systems such as in seals and O-rings are identified, alongside their subsequent dispersion routes and the interfaces across which they interact. Furthermore, we examine the toxicological implications of PFAS exposure on terrestrial and aquatic life forms, including plants, animals, and humans, along with the ecological consequences of bioaccumulation and biomagnification across trophic levels and ecosystems. This article ends with potential remediation strategies for PFAS use, including advanced treatment technologies, biodegradation, recovery and recycling methods, and the search for more environmentally benign alternatives.

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Section: Pfas Recovery and Recyclingmentioning

confidence: 99%

Forever Chemicals, Per-and Polyfluoroalkyl Substances (PFAS), in Lubrication

Dias,

Bons,

Kumar

et al. 2024

Lubricants

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Improve the thermal properties of oil‐loaded polysulfone microcapsules by optimizing copper layer for self‐lubricating polyamide

Li,

Wang,

et al. 2024

Polymer Composites

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This work reports polymer/metal double‐shell microcapsules with polysulfone (PSF) and copper as walls for application in self‐lubricating polymer. First, polyalphaolefin 40 (PAO40) was selected as lubricant oil, and PAO@PSF single shell microcapsules were prepared. A critical issue for the formation of copper layer is the sensitization of PSF shell, which can affect not only the adhesion between PSF shell and copper layer, but also the density of copper layer. The sensitization conditions were discussed in detail, and the corresponding effect on the formation of copper layer was evaluated. PAO@PSF/Cu microcapsules obtained under optimal sensitization condition were characterized by scanning electron microscopy (SEM), thermogravimetric analyzer (TGA), x‐ray energy dispersive spectrometer (EDS) and fourier transform infrared spectroscopy (FTIR). A uniform and compact copper layer improved the thermal properties of microcapsules. PSF/Cu microcapsules maintained relatively complete spherical shape when were heated to 300°C, while the PSF microcapsule softened and deformed at 200°C. The self‐lubricating polyamide 6(PA6) composites containing PAO@PSF/Cu microcapsules were fabricated at 230°C, microcapsules maintained complete structure and uniform distributed in the polymer matrix. Coefficient of friction (COF) and wear rate of PA6 composites were tested under different friction conditions. Compared with pure PA6, 15 wt.% PAO@PSF/Cu microcapsules could reduce the COF by 79.5%, and the wear rate was decreased by 98.3% under 300 rpm sliding speed and 50 N friction load.Highlights PSF/Cu double‐shell oil‐loaded microcapsules were designed and prepared. The copper layer effectively improved the thermal properties of microcapsules. The self‐lubricating PA6 composite exhibited excellent tribological properties.

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The sustainable recycling of polyvinylidene fluoride membrane for tribological application

Cited by 2 publications

References 49 publications

Forever Chemicals, Per-and Polyfluoroalkyl Substances (PFAS), in Lubrication

Forever Chemicals, Per-and Polyfluoroalkyl Substances (PFAS), in Lubrication

Improve the thermal properties of oil‐loaded polysulfone microcapsules by optimizing copper layer for self‐lubricating polyamide

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