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A hydrophobic and degradable straw based on the ethyl cellulose-coated bacterial cellulose
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Researchers developed a hydrophobic and biodegradable straw made from ethyl cellulose-coated bacterial cellulose as a microplastic-free alternative to conventional disposable plastic straws. The cellulose-based straw achieved the hydrophobicity needed for beverage use while remaining biodegradable, offering a sustainable substitute that avoids microplastic shedding during use and disposal.
Abstract In light of global petrochemical resource depletion and environmental issues stemming from widespread plastic use, disposable straws present complex issues stemming from their extensive usage, non-recyclability in most areas, and incomplete biodegradability. Therefore, finding a high-performance alternative to mitigate plastic straw-related environmental problems is critical. Cellulose deratives are recognized as sustainable substitutes for plastics, yet the hydrophilic naure restricts their application as straws. This study introduces a microplastic-free straw made from bacterial cellulose (BC). Enhanced with ethyl cellulose (EC), a thermoplastic and water-insoluble cellulose derivative, this BC-based straw exhibits improved mechanical properties (bending strength up to 66.82 MPa), hydrophobicity (water contact angle up to 110°), and heat resistance. These enhancements are attributed to its three-dimensional nanofiber network and intermolecular hydrogen bonds. Moreover, it degrades significantly faster than commercially available polylactic acid-based straw in soil, with completely decomposition within 20 days. This positions the BC-based straw as a more health-conscious and environmentally friendly alternative to plastic straws.
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An ethyl cellulose-coated bacterial cellulose based hydrophobic and degradable straw-like materials towards drinking straws
AI summary Read the abstract
Researchers developed a microplastic-free drinking straw by coating bacterial cellulose with ethyl cellulose, achieving strong mechanical performance (66.82 MPa bending strength), water-repellent surfaces, and complete soil biodegradation within 20 days — outperforming conventional polylactic acid straws on both durability and environmental decomposition.
An Innovative Alternative to Plastic Straws with Bacterial Cellulose
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This study developed biodegradable bacterial cellulose as an alternative material for drinking straws, replacing conventional plastic. Bacterial cellulose straws are fully biodegradable, offering a practical solution to reduce the single-use plastic that fragments into microplastics in the environment.
Edible, Ultrastrong, and Microplastic‐Free Bacterial Cellulose‐Based Straws by Biosynthesis
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Researchers developed a new type of drinking straw made from bacterial cellulose that is edible, free of microplastics, and mechanically stronger than paper straws. The straw uses an alginate coating instead of adhesives and has a three-dimensional nanofiber structure that outperforms commercially available alternatives. This biosynthesized straw offers a healthier and more environmentally friendly replacement for disposable plastic straws.
Growing Strong Polysaccharide-Derived Edible Straws with an Inherent Structural Binder via Biomanufacturing
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Researchers developed edible straws made from bacterial cellulose and starch using a biomanufacturing approach, as an alternative to plastic straws that contribute to microplastic pollution. The straws demonstrated strong mechanical performance, maintaining their structure in both hot and cold beverages for extended periods. The study suggests that bio-manufactured food-contact materials could help reduce reliance on conventional plastics and the associated microplastic risks.
All-natural, hydrophobic, biodegradable cellulose-based straws through simultaneous esterification and filling with stearic acid for cold beverages
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Researchers developed a biodegradable, all-natural straw made from bleached bamboo fibers and stearic acid as an alternative to plastic straws that generate microplastics. The straw achieved strong hydrophobicity, worked well in cold beverages including tea, coffee, and milk, and fully degraded in soil within 50 days. The study offers a promising green alternative that avoids both the microplastic pollution from plastic straws and the chemical additives used in conventional paper straws.
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