Articles tagged with Polyesters
Researchers at The University of Osaka developed a molecular design strategy to reconcile the trade-off between polymer material's durability and degradability. They created a tough material whose enzymatic degradation can be switched on or off using light, allowing for precise programming of its lifetime.
Researchers developed a method to produce durable lactate-based polyester with improved mechanical properties, comparable to traditional polymers. The new process resulted in a high molecular weight and balance of strength and elongation.
Researchers at KAIST have successfully developed an eco-friendly, bio-based plastic that combines the advantages of PET and nylon. The new material was produced through microbial fermentation and exhibited characteristics similar to high-density polyethylene, making it strong and durable enough for industrial use.
Researchers at Northwestern University have developed a solvent-free process to break down polyethylene terephthalate (PET) plastics using a molybdenum catalyst and ambient air moisture. The process converts PET into monomers, the building blocks for plastics, paving the way for more sustainable plastic recycling.
A new process converts polycotton textile waste into glucose, a key bio-based feedstock, and separates polyester fibers for reprocessing. The technique is scalable and cost-effective, offering a viable solution to textile waste recycling.
A KAIST research team has successfully produced a microbial-based plastic that is biodegradable and can replace existing PET bottles. The team used metabolic engineering to develop a microbial strain that efficiently produces pseudoaromatic dicarboxylic acids, which are better suited for producing polymers than traditional methods.
Researchers have developed a chalk-based coating that keeps air underneath treated polyester fabric cooler by up to 15 F, providing potential relief for pedestrians and cyclists. The coated fabrics demonstrate effective energy-free cooling in various urban environments.
New research found that bio-based fibres have a range of adverse effects on earthworms, animals critical to environmental health. The study highlights the importance of testing new materials before they are released on the market.
Researchers detected microplastic particles in the breath of wild bottlenose dolphins, suggesting inhalation may be a key route of exposure. The study supports the idea that dolphins could be exposed to potentially harmful microplastics through this pathway.
Researchers at KAIST have successfully developed a microbial strain that efficiently produces aromatic polyester using systems metabolic engineering. The team achieved the world's highest concentration (12.3±0.1 g/L) for efficient production of poly(PhLA), demonstrating the possibility of industrial-level production.
A novel method for the selective chemical recycling of PET has been developed, allowing for the recovery of polyester from textile waste. The method uses alcohols and an inexpensive iron trichloride catalyst to yield diethyl terephthalate and ethylene glycol with high selectivity.
This study validates a two-stage process for producing polyhydroxyalkanoates (PHA) using peanut oil and propionate with Cupriavidus necator. The findings show that peanut oil is the most beneficial carbon source, leading to increased biomass and PHA production.
A study by researchers at the University of Leeds found that changes to fibre composition and yarn spinning system significantly reduce microfibre release. Current product specifications do not include these details, making it challenging for brands to make informed choices about garment sustainability.
A new study has found that forensic fibers can survive underwater for several weeks, contradicting previous beliefs. This discovery could significantly aid in investigations, as police may now be able to search for fibre evidence even after extended exposure times.
Researchers have created biobased polyesters with superior mechanical properties, exceeding those of polyethylene and polypropylene. The new material can be easily recycled and exhibits increased tensile strength and elongation at break with molecular weight.
Researchers found an average of 41 microplastic particles per square meter per day settled from the atmosphere, while sediment samples contained denser particles with higher population densities. The study suggests clothing is likely the prominent source of microplastics to the Ganges River system.
A £1.75m project led by Professor Chenyu Du aims to develop new processes for recovering polyester and cellulose from mixed cotton and polyester fibres. The goal is to create a roadmap towards net-zero for the textiles industry, reducing plastic waste and increasing recycling rates.
A breakthrough solution has been discovered to recycle blended fabrics like polyester/cotton using a simple technique involving heat, non-toxic solvent, and household ingredient. This environmentally friendly approach can recover cotton on a scale of hundreds of grams while preserving the plastic component.
Researchers propose a novel method for upcycling waste PET via chemical depolymerization of acetic acid, achieving high-purity terephthalic acid and ethylene glycol diacetate. This approach reduces industrial energy use and global warming potential by over 70% and 40%, respectively.
Scientists investigate how salt uptake affects polyester microdroplets' surface potential, turbidity, size, and internal water distribution. The results suggest that microdroplets can selectively partition salt cations, leading to differential coalescence.
Researchers from Tokyo Metropolitan University have developed a new catalyst that converts plastic and biomass into organosilane compounds. The hybrid gold nanoparticle catalyst on zirconium oxide support enables mild conditions for the reaction, reducing environmental burden.
Researchers have developed a shellac-based coating to improve the gas barrier properties of moulded pulp materials, making them suitable for food packaging. The coating, combined with nanofibrillated cellulose, provides superior water resistance and thermal stability, while preserving environmental sustainability.
Researchers estimate that UK laundry releases between 6,860 and 17,847 tonnes of microfibers every year, equivalent to around 600 to 1,500 double-decker buses. Fabric characteristics have a greater impact on microfiber release than washing conditions.
Researchers at the University of Toronto have developed a two-layer coating made of polydimethylsiloxane (PDMS) brushes that significantly reduces microfibre shedding from synthetic fabrics. The coating, which can reduce pollution by more than 90%, is environmentally friendly and has been shown to work on various surfaces including gla...
Researchers have created a strong and recyclable biodegradable polyester that breaks down fully to its starting materials using mild chemical or biological processes. The new material has similar crystallinity to high-density polyethylene and retains beneficial mechanical properties.
Researchers found that hand washing can drastically cut the amount of fibers shed compared to using a machine, offering guidance for greener laundering methods. The study aims to clarify sources of microplastic pollution in the environment and promote more sustainable textile care practices.
Researchers found that microplastic mass sequestered in seafloor sediments mimics global plastic production from 1965 to 2016. The study revealed a tripling of microplastics deposited on the seafloor since 2000, with accumulation rates mirroring global use of plastics.
Scientists have created a new polyester material that combines mechanical stability with high biodegradability, making it an attractive alternative to traditional plastics. The innovative material, called polyester-2,18, was shown to degrade in lab experiments and pass industrial composting standards.
Researchers have created a CBD-based bioplastic material that could be used in medical implants, food wrappers, and other applications due to its antioxidant properties. The material has a broad melting temperature range and stretchability, making it suitable for industrial use.
Researchers from Japan have developed a simple method to recycle polyester into cross-linked polymers that retain their strength and properties. The new upcycling system uses commonly available materials and a mixing and heating process to create highly recyclable, high-value materials.
A recent study by CityU researchers found that clothes dryers are a significant source of airborne microfibers, with some releasing up to 40 times more than washing machines. The team suggests installing filtration systems in dryer vents to mitigate this environmental concern.
A new analysis found that domestic dryers produce far more microfibers than washing, but using fabric conditioners and lint filters with smaller pore size can significantly reduce their release. The study suggests improving dryer design or switching to heat-pump condenser dryers as the best long-term solution.
Researchers at Northwestern University have developed a new technique to break down polyester plastic waste into its fundamental components. This process, called upcycling, has the potential to remove microplastics from rivers and oceans.
A pilot study reveals that a single dryer can discharge up to 120 million microfibers annually, exceeding washing machine releases. Microfibers from natural and synthetic fabrics are released through friction in the dryer, posing environmental concerns.
Researchers have found suitable sewing thread brands and stitch densities for Ghanaian public basic school uniforms, resulting in improved seam strength, efficiency, and elongation. The recommended thread brand B? with a stitch density of 14 stitches per inch (SPI) is expected to produce high-quality seams.
Researchers at UC Berkeley have developed a method to make biodegradable plastics break down easily in weeks, solving the problem of single-use plastics not being biodegradable. The process involves embedding polyester-eating enzymes in the plastic, which degrades into small molecules when exposed to heat and water.
Scientists have invented a way to break down compostable plastics into small molecules within weeks using just heat and water. The new process involves embedding polyester-eating enzymes in the plastic, which then degrade it into lactic acid that can feed soil microbes.
A UC Riverside-led team developed a simple method to assess contaminants in household fabrics exposed to thirdhand smoke. The study found that THS chemicals are more extractable from fabrics in humid environments, posing greater exposure risks for people living in such conditions.
Scientists from the Kleij group have created a new method for preparing biobased polyesters by transforming a terpene, β-elemene. The resulting polymer can be tailored through post-modification reactions to achieve desired properties.
A UBC study reveals the most effective fabric combinations for COVID-19 face masks, with a focus on filtration efficiency and breathability. The researchers recommend specific materials and construction techniques to optimize mask performance.
A study published in Environmental Science and Technology found that wearing clothes can release up to 400 microfibers per gram of fabric during normal activity, while washing clothes can release up to 4,000. This suggests that one person could release almost 900 million polyester microfibers per year through simply wearing garments.
Researchers engineered a violet-colored polyester fabric that attracts more female tsetse flies and shows improved effectiveness against savannah species. The new fabric was developed based on understanding how flies see color.
Synthetic fibers from polyester and nylon release microplastics into the environment, contaminating plants and animals in oceans. Biosynthetic fibers, derived from natural proteins, can replace synthetic fibers and provide recyclable and biodegradable alternatives.
Researchers at Rutgers University have developed flexible, durable heating patches that are nearly 70% more efficient than similar patches. These patches use intense pulses of light to fuse silver wires with polyester, reducing energy waste and carbon footprint by selectively heating the human body.
Researchers developed a method to obtain polyester from plant oil by functionalizing polymerization, preventing loss of Undecenol and disrupting molecular chain-building process. The concept has potential transfer applications for other renewable resources.
Researchers at Virginia Tech have synthesized a biodegradable alternative to polyolefins using a new catalyst and polyester polymer. This breakthrough could lead to improved physical and chemical properties of the resulting material, making it suitable for various applications.
Researchers at Toyohashi University of Technology developed a method to synthesize a novel polyester with an alternating arrangement of L- and D-lactic acids, leading to improved productivity and crystallization rate. This achievement is expected to facilitate the development of polyesters with unprecedented characteristics.
Researchers developed a novel strategy to produce aromatic polyesters from Escherichia coli strains using microbial fermentation and synthetic biology. The engineered E. coli strain can produce various high-valued aromatic polyesters from renewable biomass, offering a sustainable alternative for the bio-plastic industry.
Researchers at University of Otago used advanced technology to compare fiber types, finding cotton adsorbs least VOCs, while polyester emits the most odors. Wool shows a mix of high adsorption and low release patterns, highlighting intermolecular forces as key factor.
Researchers develop microorganisms that convert human urine and CO2 into chemicals to make new plastics and nutrients. The goal is to reduce waste and reuse resources for long-duration space missions, which require minimizing fuel costs by conserving weight.
Researchers at Aalto University have made significant progress in recycling and upcycling clothing to create high-quality textiles. They discovered an ionic liquid that can dissolve cellulose from wood pulp and cotton-polyester blends, producing fibers stronger than commercially available viscose.
Researchers at the University of South Carolina developed a method to identify deteriorated magnetic tapes using infrared spectroscopy. The technique can distinguish between intact and degraded tapes, which have similar appearances but different chemical compositions.
Research published in Applied and Environmental Microbiology found that polyester clothes smell worse than cotton after exercise due to bacteria growth. Bacteria like micrococci thrive on polyester surfaces, breaking down sweat and hormones into odor-causing molecules.
Researchers at MIT have developed a system that enables printable robotic components to fold into prescribed three-dimensional configurations when heated, allowing for the creation of fully assembled robots. The technology also includes designs for resistors, inductors, and capacitors, as well as sensors and actuators.
Researchers have developed a method to extract suberin from cork oak trees and re-make it into a waterproof, antibacterial plastic-like material. The material's biocompatibility makes it suitable for clinical usage, including potential applications in medical devices.
Researchers at Texas A&M AgriLife Research are developing wireless sensing networks to monitor field conditions in rice and cotton production. The systems use sensors to track temperature, soil moisture, and fiber quality, enabling farmers to make data-driven decisions. This technology has the potential to improve crop management, incr...
Researchers create e-Textiles that double as rechargeable batteries using single-walled carbon nanotubes. The fabrics retain flexibility and stretchability while storing electricity.
Researchers at the University of Washington have developed a mixed-fiber material combining chitosan from crustacean shells with industrial polyester for use in nerve repair. The material shows promise for repairing severed nerves and could be used in other biomedical applications.
Researchers at MIT developed a new biopolymer suture made from material produced naturally by the human body, which is 30% stronger and more flexible than current sutures. The sutures have been cleared by the FDA for use in abdominal closures and tendon stitching, offering a potential solution to re-opening wounds.
Researchers have created a new generation of medicinal products using biodegradable materials, allowing for controlled release and reduced side effects. The novel synthetic process enables the production of diverse polymers, increasing the chances of finding an appropriate excipient for various active substances.