Articles tagged with Polymer Architecture
Researchers have developed a new 3D-printable cellulose hydrogel that defies freezing temperatures, maintaining ionic conductivity and mechanical strength. The hydrogel exhibits shear-thinning behavior, allowing it to flow through a 3D printer nozzle and hold its shape.
Scientists at The University of Osaka have created a multipath synergistic strategy to toughen elastomers by sequentially activating three energy dissipation pathways. This approach enhances the material's toughness while maintaining its elasticity, making it suitable for various applications such as tires, gloves, and adhesives.
Scientists discovered that internal structure of polymer nanoparticles plays a key role in controlling ice growth, contrary to previous designs that focused on surface interactions. Changing the inner core's chemistry can effectively inhibit ice recrystallisation.
Kyushu University researchers observed individual polymer chains' behavior on solid surfaces, revealing non-equilibrium dynamics and thermal fluctuations. The study contributes to enhancing adhesive performance and lightweighting of materials.
A Rice University-led team has unveiled the molecular structures on industrial catalysts that behave during vinyl acetate monomer production. The work points to catalyst designs that could reduce energy use, carbon emissions, and make global VAM production cleaner and more reliable.
A team of researchers uncovered a surprising physical mechanism explaining how isolated filaments form knots in fluids under strong gravitational forces. The discovery provides insight into polymer dynamics, with implications for understanding DNA behavior, designing soft materials, and nanomaterials fabrication.
Researchers have developed a new approach to overcome limitations in single-atom catalysts by creating one-dimensional organic polymers capable of selectively binding metal atoms. The platform marks a major advance in single atom catalysis, enabling stronger gas binding compared to other structures.
Research on polymer fiber reinforced concrete in low vacuum environments reveals improved mechanical properties and enhanced durability due to the high strength of polyethylene fibers. The study's findings suggest leveraging fiber confinement properties for optimal performance.
A new study by Colorado State University outlines a path to creating advanced, recyclable plastics using natural poly(3-hydroxybutyrate) (P3HB). The breakthrough method involves stereodivergent catalysis, which enables the production of enantiopure PHAs with improved properties for various applications.
A UMass Amherst graduate student's groundbreaking discovery reveals that neutral polyzwitterions take sides in the presence of electrical stimuli, contradicting conventional wisdom. The study opens new avenues for biomedical research, including protein analysis and drug delivery.
Researchers at the University of Houston create ceramic materials with origami-inspired shapes and a soft polymer coating, allowing them to bend under pressure without breaking. The resulting structures have improved toughness and can be used in medical prosthetics, aerospace, and robotics.
Researchers at MIT have developed a new method to fabricate stretchable ceramics, glass, and metals using a double-network design. This material can stretch over four times its size without breaking, making it suitable for tear-resistant textiles and flexible semiconductors.
A team of researchers led by UMass Amherst discovered that imperfect polymer fillers can enhance thermal conductivity, challenging conventional wisdom. Polymers with defective fillers performed 160% better than those with perfect fillers in conducting heat.
Researchers develop triboelectric nanogenerators using closely packed small beads, which transfer electric charges efficiently to produce electricity. The use of melamine-formaldehyde beads offers a cost-effective alternative to traditional TENG technology.
Researchers developed a recyclable alternative to thermosets, making materials like car tires and hip joints more environmentally friendly. The new material, made from dihydrofuran, can be easily recycled and degrades naturally over time.
A team of scientists at Linköping University has developed a method to anchor conductive polymers to individual living cell membranes without affecting the cell's functions. This innovation opens up new possibilities for treating neurological diseases with high precision.
A Northwestern University-led research team has developed a 2D mechanically interlocked polymer with exceptional flexibility and strength. The material's unique structure exhibits up to 100 trillion mechanical bonds per square centimeter, making it a promising candidate for high-performance body armor.
Researchers at Colorado State University have developed a stronger, biodegradable adhesive polymer that can replace common superglues. The new polymer, made from P3HB, offers tunable adhesion strength and is biodegradable under various conditions.
D-Glue, an eco-friendly adhesive designed to break apart at lower temperatures, will partner with Plug and Play Japan's Deeptech Program. The debondable glue aims to reduce landfill waste and energy consumption, with the potential to expand production on a mass scale.
Researchers at UVA have developed a new polymer design that decouples stiffness and stretchability, allowing materials to be both strong and flexible. The 'foldable bottlebrush polymer networks' can store extra length within their structure, enabling them to elongate up to 40 times more than standard polymers without weakening.
Researchers at the University of Virginia School of Engineering and Applied Science have designed a drug-carrying molecule that can slip past the lung's natural defenses. The nanocarrier, called PEG-BB, is shaped like a bottlebrush and mimics the properties of mucus, allowing it to move quickly through the airway.
Researchers have developed a new class of synthetic polymers that effectively combat fungal infections by attacking the cells in multiple ways. These compounds mimic naturally occurring peptides and offer potential for sustainable treatment options with improved survival rates.
The study explores the role of helical secondary structure in enhancing conductivity and stability of solid-state peptide polymer electrolytes. Longer helices lead to higher conductivity and increased overall stability, making these materials more viable for energy storage systems.
Scientists embedded gold nanorods in hydrogels that can contract when exposed to light and expand again upon removal. This expansion and contraction mechanism allows for remotely controlled actuators with endless design possibilities.
Scientists develop locally periodic honeycomb structure with ordered but non-periodic arrangements, exhibiting properties distinct from usual periodic crystals. The study highlights the effectiveness of aperiodic approximants in inducing modulations within self-assembled soft-matter systems.
Researchers developed a crystalline carbon nitride membrane that outperforms traditional polymer membranes in separating lithium ions from magnesium ions in salt-lake brine. The innovative design mimics biological ion channels, achieving an impressive selectivity ratio of 1,708 for highly dilute lithium ions.
Scientists aim to create a spray-on bandage that breaks down within 48 hours, providing time for proper treatment. The project uses enzymes to degrade polymer complexes, which will allow for controlled degradation and potential applications in drug delivery.
A Binghamton University professor investigates the adaptive response of fire ant rafts to mechanical load, discovering that they exhibit catch bond behavior under force, which enhances cohesion for survival. This phenomenon is being explored to develop artificial materials with autonomous self-strengthening properties.
Researchers developed a simple and efficient method for diversifying reactive end-groups on poly(2-oxazoline)s, enabling rapid exploration of poly(2-oxazoline)-based nanomedicine platforms. The approach was shown to produce POx-based lipid nanoparticles comparable in transfection capability to their PEGylated counterparts.
A team from Pohang University of Science & Technology has developed a memory transistor that can adjust its threshold voltage through photocrosslinking. The innovation combines two molecules with a polymeric semiconductor to form a stable bond, enabling precise control of the semiconductor layer's structure.
Researchers at the University of Washington have solved a long-standing chemical mystery in organic electrochemical transistors (OECTs), which allow current to flow in devices like implantable biosensors. The study reveals that OECTs turn on via a two-step process, causing a lag, and off through a simpler one-step process.
The IRIS beamline at BESSY II has been extended with a nanoscope, enabling the imaging and spectroscopy of structures smaller than a thousandth of a human hair. This upgrade allows researchers to study biological systems, catalysts, polymers, and quantum materials with unprecedented resolution.
Scientists at POSTECH create conducting polymers with exceptional electrical conductivity, rivaling graphene's performance. The breakthrough achieves ultrafast electron mobility and long phase coherence length, overcoming a major challenge in organic semiconductors.
Researchers use carbon nanotubes to prevent cracking in multilayered composites, improving resistance by up to 60%. This innovation could lead to safer and more durable aircraft with advanced composite materials.
New study uses high-powered microscopy and mathematical theory to unveil nanoscale voids in three dimensions. The findings show a strong correlation between unique physical properties of random empty space and improved filtration performance.
Researchers discovered novel rheological patterns in connected ring polymers under continuous shear, governed by interplay between hydrodynamics and topology. Ring polymers exhibit unique tumbling motions, such as gradient-tumbling and slip-tumbling, affecting their mechanical properties and viscosity.
The study reveals two distinct dynamic patterns in ring polymers: gradient-tumbling and slip-tumbling. BRs undergo continuous tumbling around the gradient direction, while PCs maintain a fixed conformation with intermittent exchange of rings.
Researchers have created a method to make fully recyclable polymers from plant cellulose, which can replace some plastics and reduce plastic pollution. The new polymers have various structures that offer different applications, including high-performance materials for optical, electronic, and biomedical uses.
Researchers have developed a printable organic polymer that enables them to measure charge-to-spin conversion in spintronic materials at room temperature, revealing new insights into the mechanics of spintronics. The findings suggest longer spin lifetimes and tunability, paving the way for more efficient and energy-friendly devices.
Researchers at UNIST have developed a groundbreaking technology that enables the real-time display of colors and shapes through changes in nanostructures. Utilizing block copolymers, they achieved the self-assembly of photonic crystal structures on a large scale, mimicking natural phenomena observed in butterfly wings and bird feathers.
Researchers at Yale University and Oak Ridge National Laboratory discovered the role of molecular structures in stabilizing oversaturated silicic acid solutions. They found that polymers with charged amine and uncharged amide groups exhibit superior silica scale inhibition performance.
Researchers at BESSY II used RIXS and DFT simulations to analyze the electronic structures of fumarate, maleate, and succinate dianions. The study found that maleate is potentially less stable than fumarate and succinate due to its delocalized HOMO orbital, which can lead to weaker binding with molecules or ions.
Researchers created a polymer electrolyte membrane with an interpenetrating network that enhances fatigue resistance and prolongs the lifespan of fuel cells. The composite membrane exhibits a lifespan of 410 hours, compared to 242 hours for the original Nafion membrane.
Researchers have developed a novel imaging method to study the intricate relationships within a fungal garden cultivated by leafcutter ants. The technique revealed crucial metabolites and enzymes driving plant degradation, highlighting the fungus as the primary degrader of plant materials.
Researchers at GIST designed two novel polymers to explore the properties of organic mixed ionic–electronic conductors. The polymers exhibited unique molecular orientation-dependent transient behaviors in organic electrochemical transistors.
A team at Pohang University of Science & Technology has successfully created the world's first plumber's nightmare structure in block copolymers, a complex configuration where polymer chain ends coalesce inward. This achievement showcases the potential for self-assembly in block copolymers and opens up new possibilities for materializi...
Amanda Marciel, assistant professor at Rice University, receives a $670,406 NSF CAREER Award to develop synthetic networks with gel-like softness and high elasticity. Her research aims to create new elastomers with controlled structure-function relationships.
Researchers at GIST developed high-performance OECT devices based on poly(diketopyrrolopyrrole) (PDPP)-type polymers, achieving high charge carrier mobility and volumetric capacitance values. The optimized material exhibited a figure-of-merit value of over 800 F V^-1 cm^-1 s^-1.
Scientists at the University of Illinois have created polymer networks with dynamic bonds that can selectively absorb specific frequencies of sound and vibrations. This innovative material has the potential to improve hearing protection for individuals exposed to loud noises, such as military personnel or helicopter pilots.
Researchers at the University of Bath and University of Surrey have developed a method to introduce degradable bonds into thermoset polymers, making them more easily recyclable. The study found that gels with breakable bonds retained their properties better when reformed after degradation.
Rice University researchers have developed a new method for making covalent organic frameworks (COFs) that could revolutionize various fields such as energy applications, semiconductor devices, and drug delivery. The fast and low-cost approach uses vapor deposition to produce ordered 2D crystalline COFs.
Biopolymer composites made from agarose and chitosan demonstrate enhanced strength, antibacterial properties, and water repellence. These sustainable materials could lead to eco-friendly packaging solutions for food and consumer goods.
The team created an ultraclean transfer process using a hybrid stamp, resulting in atomically clean interfaces and minimal strain. This breakthrough enables the commercialization of 2D material-based electronic devices with novel hybrid properties.
Scientists at Tokyo Tech developed self-folding polymers to create smaller, safer gadolinium-based contrast agents for cancer diagnosis and neutron capture radiotherapy. These nanosized complexes show enhanced tumor accumulation and penetration, reducing toxicity while increasing MRI performance.
Temperature-sensitive emulsions offer a new method to control when droplets dissolve, enabling precise targeting of medicines to specific areas in the body. The discovery could revolutionize methods of delivering medication in higher concentrations to diseased areas.
A new technology enables the printing of complex robots with soft, elastic, and rigid materials in one go. This allows for the creation of delicate structures and parts with cavities as desired.
Researchers at University of Illinois developed new semiconductor materials that can harness the power of chirality, a non-superimposable mirror image. The study found that subtle molecular changes can modulate chiral helical assemblies, leading to new optical, electronic, and mechanical properties.
A team of scientists at Newcastle University has created a novel, water-based adhesive system that can bond surfaces in the neutral pH range but can be detached again in strongly acidic or alkaline environments. The new adhesive exhibits high adhesion strength to difficult-to-bond polypropylene surfaces.
A new polymer binder is introduced to address durability issues in dual-ion batteries. The binder features azide and acrylate groups, which enhance the structural integrity of graphite during charge and discharge cycles. Dual-ion batteries equipped with this binder demonstrate exceptional performance, even after 3,500 recharge cycles.
Researchers at Georgia Tech have developed new polymer membranes that can improve distillation processes, reducing the global energy and water use. The DUCKY polymers use a novel combination of characteristics to selectively bind desirable molecules, making them a promising solution for industries.