Articles tagged with Polycarbonates
Researchers at KTH Royal Institute of Technology have identified three bisphenols with negligible estrogenic effects, suitable for replacing BPA in consumer products. The safe and sustainable alternatives are made from renewable resources and demonstrate thermal stability and mechanical properties comparable to BPA-based plastics.
Researchers from ICIQ describe a circular process to recycle biobased polycarbonates, which can contribute to a more sustainable circular economy. The study uses a multi-task catalyst to promote depolymerization and repolymerization of the polymer.
A new flow photo-on-demand synthesis system using chloroform as a precursor has been successfully developed by researchers at Kobe University. The system achieves high conversion rates and can synthesize various chemical products continuously in large quantities, offering a safe, inexpensive, and environmentally friendly alternative to...
Researchers found that chemical pre-treatment can help microorganisms break down plastics more quickly. The process makes carbon, oxygen, and hydrogen from the plastic's molecular structure more accessible for bacteria to use as food.
Researchers at the University of Bath have developed a simple and rapid chemical recycling process for polycarbonates, breaking down plastic waste within 20 minutes at room temperature. The new process can convert waste into its chemical constituents, preserving product quality over an infinite number of cycles.
A team of researchers has successfully synthesized polycarbonate diols from carbon dioxide and diol at atmospheric pressure using a CeO2 catalyst. This process eliminates the need for dehydrating agents, producing only water as a by-product, making it an attractive alternative to existing methods.
Optical coherence tomography (OCT) technology has been successfully used to distinguish between legitimate and counterfeit travel documents. The study found that OCT can perform quantitative, non-destructive, high-resolution sub-surface analysis of multi-layered identification documents with a high imaging throughput and density.
Researchers at KRICT developed a bio-polycarbonate that surpasses petroleum-based polycarbonate in terms of strength, transparency, and UV-resistance. The material exhibits exceptional performance due to the synergistic interplay between isosorbide and nanocellulose.
Researchers found that folding graphene significantly enhances its mechanical properties, leading to increased stiffness, strength, and toughness in polymer composites. The folded structure can sustain larger bending forces compared to stacked layers, making it an efficient strategy for incorporating large-area monolayer graphene films.
A recent Texas A&M AgriLife study reveals that dietary exposure to bisphenol-A (BPA) can increase mortality and worsen symptoms of inflammatory bowel disease (IBD). Researchers found BPA altered gut microbial amino acid metabolism, leading to increased inflammation and reduced compound production related to serotonin breakdown.
Researchers at Cornell University have developed a new transient electronics architecture that can remotely vaporize itself, offering benefits for data protection and environmental monitoring. The technology uses radio waves to trigger a thermal reaction, releasing chemicals that decompose the electronics.
Scientists at the U.S. Army Research Laboratory have discovered poly(urethane urea) elastomers that exhibit hyperelastic behavior, becoming extremely stiff and bouncing back after high-speed impacts. This could lead to new designs for military armor, such as enhanced combat helmets.
A team of chemists developed a method to produce polycarbonates from limonene and CO2, replacing bisphenol-A (BPA) as a precursor. This bioplastic production approach reduces toxicity and offers a sustainable alternative for various industries.
MIT engineers have developed a functional graphene-based dialysis membrane that filters nanometer-sized molecules at an unprecedented rate. The membrane, made from a single layer of carbon atoms, separates molecules quickly due to its exceptional diffusion properties.
Researchers at the University of Bath have developed a new process to make polycarbonate plastic from sugars and carbon dioxide, offering a more sustainable alternative to traditional plastics. The resulting plastic is biodegradable, bio-compatible, and can be used for medical implants or as scaffolds for growing tissues or organs.
Researchers have developed a powerful new reactivity called SuFEx that enables the creation of stable, non-polar linkers for making drugs, diagnostics, and smart materials. The breakthrough opens up vast numbers of new molecules for production, with potential applications in fields such as drug discovery, biology, and materials science.
Researchers at Brown University found that selenium nanoparticles can reduce Staphylococcus aureus bacteria on implant materials by up to 90%. The coating is more effective than current silver-based alternatives, which are less biocompatible and expensive.
Researchers discovered that temperatures and heat fluxes exceeding polycarbonate performance limits can cause lens degradation, exposing firefighters to toxic gases and burns. The study aims to inform efforts to improve the match between standard requirements and real-life conditions.
Scientists have developed new, eco-friendly plastics that outperform traditional polycarbonate materials in terms of heat resistance and biodegradability. These innovative plastics are set to replace BPA-containing plastics in baby bottles, shopping bags, and other products.
A study by University of Cincinnati researchers found that stainless steel- and/or co-polyester lined-aluminum bottles did not release BPA, while aluminum bottles with epoxy-based resins showed variable contamination. However, boiling water increased BPA migration from epoxy-lined bottles.
Researchers found that game-worn football faceshields are more susceptible to breaking than new ones, especially when subjected to lower forces of impact. The study recommends routine inspection and replacement of used faceshields to prevent potential eye injuries.
Researchers pretreated polycarbonate with UV light and heat before exposing it to three types of fungi, including the white-rot fungus. The fungi broke down the plastic, using its BPA as energy, resulting in substantial decomposition without releasing toxic chemicals.
A new Harvard study found that drinking from polycarbonate bottles increased urinary BPA levels by 69%, suggesting that these containers release the chemical into liquid consumed in sufficient amounts. The study suggests that heating liquids in polycarbonate bottles may further increase BPA leaching.
University of Houston researchers have developed highly conductive nanocomposites using polycarbonate and carbon nanotubes, improving the integrity of electronics in aircraft, computers, and iPhones. The findings could lead to antistatic coatings and electromagnetic interference shields, increasing device lifespan and efficiency.
Researchers have discovered innovative ways to create polycarbonate plastics from carbon dioxide, which could lead to the production of more affordable, safer, and environmentally friendly products. The new process has the potential to significantly reduce greenhouse gas emissions by trapping CO2 in plastics.
Researchers found that boiling water increases BPA release from polycarbonate bottles, with rates increasing 15-55 times faster than at lower temperatures. The study's findings suggest that cumulative environmental exposures may harm human health.