Synergy of silica sand and waste plastics as thermoplastic composites on abrasive wear characteristics under conditions of different loads and sliding speeds

Soni, Ashish; Das, Pankaj Kumar; Yusuf, Mohammad; Ridha, Syahrir; Kamyab, Hesam; Alam, Mohammad Azad; Masood, Faisal; Chelliapan, Shreeshivadasan; Ubaidullah, Mohd; Pandit, Bidhan; Prakash, Chander

doi:10.1016/j.chemosphere.2023.138233

Cited by 14 publications

(1 citation statement)

References 62 publications

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“…The observed differences in wear mechanism between virgin and UV-aged LDPE are likely related to the difference between the wear of a ductile and brittle material, generally observed for metals and polymer composites. 91,93,94 Furthermore, at 2−3 μN, the wear mechanism of UV-aged LDPE remained at plowing and wedge formation, suggesting that the wear mechanism changed as a function of load, more so for UV-aged LDPE than virgin ones (Figure 3C). This loaddependent wear mechanism transition was previously discovered by Kato 91 for microscale wear of metals and steels (plowing → wedge formation → cutting).…”

Section: Nanoscratch Abrasion Experimentsmentioning

confidence: 99%

Nanoscale Abrasive Wear of Polyethylene: A Novel Approach To Probe Nanoplastic Release at the Single Asperity Level

Rahman,

BinAhmed,

Keyes

et al. 2024

Environ. Sci. Technol.

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There is a growing concern that nanoplastic pollution may pose planetary threats to human and ecosystem health. However, a quantitative and mechanistic understanding of nanoplastic release via nanoscale mechanical degradation of bulk plastics and its interplay with photoweathering remains elusive. We developed a lateral force microscope (LFM)-based nanoscratch method to investigate mechanisms of nanoscale abrasive wear of low-density polyethylene (LDPE) surfaces by a single sand particle (simulated by a 300 nm tip) under environmentally relevant load, sliding motion, and sand size. For virgin LDPE, we found plowing as the dominant wear mechanism (i.e., deformed material pushed around the perimeter of scratch). After UVA-weathering, the wear mechanism of LDPE distinctively shifted to cutting wear (i.e., deformed material detached and pushed to the end of scratch). The shift in the mechanism was quantitatively described by a new parameter, which can be incorporated into calculating the NP release rate. We determined a 10-fold higher wear rate due to UV weathering. We also observed an unexpected resistance to initiate wear for UVaged LDPE, likely due to nanohardness increase induced by UV. For the first time, we report 0.4−4 × 10 −3 μm 3 /μm sliding distance/μN applied load as an initial approximate nanoplastic release rate for LDPE. Our novel findings reveal nanoplastic release mechanisms in the environment, enabling physics-based prediction of the global environmental inventory of nanoplastics.

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Section: Nanoscratch Abrasion Experimentsmentioning

confidence: 99%

Nanoscale Abrasive Wear of Polyethylene: A Novel Approach To Probe Nanoplastic Release at the Single Asperity Level

Rahman,

BinAhmed,

Keyes

et al. 2024

Environ. Sci. Technol.

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Valorization of Agriculture Residues into Value‐Added Products: A Comprehensive Review of Recent Studies

Hoang,

Van Anh,

Yusuf

et al. 2024

The Chemical Record

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Global agricultural by‐products usually go to waste, especially in developing countries where agricultural products are usually exported as raw products. Such waste streams, once converted to “value‐added” products could be an additional source of revenue while simultaneously having positive impacts on the socio‐economic well‐being of local people. We highlight the utilization of thermochemical techniques to activate and convert agricultural waste streams such as rice and straw husk, coconut fiber, coffee wastes, and okara power wastes commonly found in the world into porous activated carbons and biofuels. Such activated carbons are suitable for various applications in environmental remediation, climate mitigation, energy storage, and conversions such as batteries and supercapacitors, in improving crop productivity and producing useful biofuels.

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Extraction and characterization of Oplismenus hirtellus grass fiber for possible bio-reinforcement material in polymer composites

Selvan,

Mansingh,

Binoj

et al. 2024

Polym. Bull.

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Synergy of silica sand and waste plastics as thermoplastic composites on abrasive wear characteristics under conditions of different loads and sliding speeds

Cited by 14 publications

References 62 publications

Nanoscale Abrasive Wear of Polyethylene: A Novel Approach To Probe Nanoplastic Release at the Single Asperity Level

Nanoscale Abrasive Wear of Polyethylene: A Novel Approach To Probe Nanoplastic Release at the Single Asperity Level

Valorization of Agriculture Residues into Value‐Added Products: A Comprehensive Review of Recent Studies

Extraction and characterization of Oplismenus hirtellus grass fiber for possible bio-reinforcement material in polymer composites

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