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Modified polyamide fibers with low surface friction coefficient to reduce microplastics emission during domestic laundry
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Researchers developed a modified polyamide fiber that sheds 60% fewer microplastic particles during washing by incorporating a silicone-based compound that lowers surface friction. The fibers maintained good physical properties including strength and water resistance, making them practical for textile manufacturing. The study offers a promising engineering approach to reducing one of the largest sources of microplastic pollution entering waterways from household laundry.
The widespread presence of microplastics has become a serious threat to humans and ecological environments because they carry many pollutants and can be easily ingested by aquatic organisms. Fibrous microplastics (FMPs) released from synthetic fiber garments during domestic laundry are a major source of contamination. Herein, we report a facile FMPs mitigation strategy for polyamide 6 (PA6) fibers by incorporating environmentally friendly polydimethylsiloxane (PDMS) during melt spinning. The obtained PA6/PDMS fibers showed a lower friction coefficient than the pure PA6 fibers. Surface morphology, tribology, and washing characterizations verified that a 60% reduction in FMPs shedding was achieved by reducing the friction. In addition, the low-surface-friction PA6/PDMS fabrics with high hydrophobicity exhibited improved waterproof and anti-stain behaviors. It is important to note that none of the essential properties, such as surface structure, dyeing and printing of the fabrics were compromised after PDMS blending. This study provides a green and scalable route for mitigating laundry microfibers using a fiber domain design.
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