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Tunable and Biodegradable Poly(Ester Amide)s for Disposable Facemasks
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Researchers synthesized seven novel poly(ester amide) (PEA) polymers from biosourced materials for use as biodegradable disposable facemask components, addressing microplastic pollution from conventional disposable masks. Two PEA grades achieved full biodegradation within 35 days and were compatible with electrospinning, producing ultra-thin filter fibers with microparticle capture efficiency and air permeability comparable to commercial filters.
Abstract The widespread use of disposable facemasks during the COVID‐19 pandemic has led to environmental concern due to microplastic pollution. Biodegradable disposable facemasks are a first step to reducing the environmental impact of pandemics. Here, high‐performance facemask components based on novel poly(ester amide)s (PEA) grades synthesized from biosourced materials and processed into nonwoven facemask components are presented. PEA‐based polymers present an excellent compromise between mechanical performance and biodegradability. Importantly, the properties of the PEA can easily be tuned by changing the ratio of ester and amide, or by varying diol and diacid parts. Seven polymers are synthesized which are optimized for biodegradability and processability. Among them, two grades combines 1) electrospinning process compatibility with 2) full degradation within 35 days, using a normalized biodegradation test. The ultra‐thin filters thus developed are evaluated for performance on a custom‐made characterization bench. The filters achieve microparticle capture efficiency and air permeability comparable to commercial filters. Another PEA grade is optimized to reach optimal viscothermal properties that made it compatible with solvent‐free melt‐spinning process as demonstrated with continuous fiber production. Overall, this environmentally friendly solution paves the way for the fabrication of high‐performance fibers with excellent biodegradability for the next‐generation facemasks.
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Tuneable and biodegradable poly(ester amide)s for disposable facemasks
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Scientists developed biodegradable face mask filters made from novel bio-based poly(ester amide) polymers that fully degrade within 35 days. The filters matched the particle capture efficiency and breathability of commercial mask filters, offering a more environmentally friendly alternative to standard disposable masks that contribute to microplastic pollution.
Electro-blow spinning of fully biodegradable nanofibers membranes for air filtration applications
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Researchers made disposable facemask material from biodegradable plant-based plastics (PLA and related polymers) using a specialized spinning process, instead of conventional plastics. In lab tests, the nanofiber material filtered smoke particles effectively, and its breakdown was tested under composting, water exposure, and UV light to check how fast it degrades.
Antiviral/antibacterial biodegradable cellulose nonwovens as environmentally friendly and bioprotective materials with potential to minimize microplastic pollution
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Biodegradable cellulose nonwoven materials incorporating antiviral and antibacterial agents were developed as a sustainable alternative to polypropylene face masks, demonstrating comparable filtration performance with significantly faster environmental degradation, reducing the microplastic pollution burden of disposable PPE.
Biodegradable Electrospun Nanofiber Membranes as Promising Candidates for the Development of Face Masks
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This review examines the development of biodegradable electrospun nanofiber membranes as alternatives to conventional plastic face masks. Researchers summarize progress on materials including silk fibroin, polylactic acid, chitosan, cellulose, and zein, which can achieve strong filtration performance. The study highlights that degradable nanofiber filters offer a promising solution to reduce the environmental burden of plastic pollution from disposable face masks.
Advances in electrospun nanofiber-based personal protective equipment for active filtration
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Most face masks today are made from plastic materials that don't break down, shedding microplastics into the environment long after you throw them away. This review rounds up research on a promising alternative: masks made from biodegradable nanofibers (created through a technique called electrospinning) that can filter out germs and pollutants just as well, while some versions even add natural antibacterial ingredients like essential oils or metal particles for extra protection. The takeaway: eco-friendlier masks that protect your health without leaving lasting plastic pollution behind may be on the horizon, though most of this work is still in the research stage rather than on store shelves.
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