#copolymers

[bisexual-engineer-girl]

the woke gay DEI agenda is in my materials science class. the homopolymers are superior just because they're special

[shreevalllabhchemical]

Enhance the effectiveness of your cleaning products with EO/PO co-polymers! These versatile ingredients are a key component in liquid detergent formulations, dishwashing liquids, and even toilet cleaning products. With their ability to act as acid thickeners, EO/PO co-polymers help deliver superior performance and a smooth, consistent texture. Trust in the power of innovation for a cleaner, brighter tomorrow.

For more information, visit - https://www.shreechem.in/industries

[materialsscienceandengineering]

Plumber's nightmare structure in block polymers

Scientists solve a long-standing block copolymer research conundrum through polymer chain end modifications. The study garners substantial a

Plumber's nightmare structure presents itself as an assemblage where all exits seem to converge inward -- a plumber's nightmare but an anticipated uniqueness for researchers, suggesting distinctive traits divergent from traditional materials. Nonetheless, this intricate configuration was deemed unattainable, bordering on the realm of the impossible. Recently, a research team at Pohang University of Science and Technology (POSTECH) unearthed clues from neglected minuscule ends, transforming this dream into reality. The journal Science not only published this research but also spotlighted it as an article, sparking considerable interest within academic circles. Professor Moon Jeong Park and PhD candidate Hojun Lee from POSTECH's Department of Chemistry brought to life nanostructures of block copolymers (hereafter BCPs), which were previously only envisioned. This study was featured in Science and published on the fifth of January 2024.

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[materialsscienceandengineering]

Harnessing the building blocks of polymer recycling

Polymers are lightweight, durable, and easily processed into fabricated parts, features that promoted polymers to become the most relevant class of engineering materials by volume. However, recycling polymers is a challenge that materials scientists have been researching for decades.

An alternate route toward a more sustainable polymer industry is to increase the service lifetime of polymers. An intriguing new concept is to impart the ability to "self-heal" from structural damage. Michael Bockstaller, professor of materials science and engineering at Carnegie Mellon University Materials Science and Engineering, in collaboration with Krzysztof Matyjaszewski, professor of chemistry, has discovered that the binding of copolymers on the surface of nanoparticles that are already used in industrial manufacturing provides an economic and scalable route toward self-healing polymers with increased strength and toughness.

Normally when you think of the building blocks of materials, you think of atoms. In Bockstaller's research group, this concept inspired a new approach to fabricate functional materials by assembling nanoparticle building blocks using a form of atom transfer radical polymerization, a technique invented and developed by Matyjaszewski. The properties of the resulting materials can be varied by controlling the interactions between nanoparticle building blocks. This concept opens up new possibilities to vary properties of engineering materials without having to change their chemical composition—a feature that is highly beneficial in the context of recyclability.

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[materialsscienceandengineering]

Researchers describe a new polymer structure called a bilayer-folded mesophase that has been discovered through a random copolymer sequence.

Polymers, large molecules made up of repeating smaller molecules called monomers, are found in nearly everything we use in our day-to-day lives. Polymers can be natural or created synthetically. Natural polymers, also called biopolymers, include DNA, proteins, and materials like silk, gelatin, and collagen. Synthetic polymers make up many different kinds of materials, including plastic, that are used in constructing everything from toys to industrial fiber cables to brake pads.

As polymers are formed through a process called polymerization, the monomers are connected through a chain. As the chain develops, the structure of the polymer determines its unique physical and chemical properties. Researchers are continually studying polymers, how they form, how they are structured, and how they develop these unique properties. By understanding this information, scientists can develop new uses for polymers and create new materials that can be used in a wide variety of industries.

In a paper published in Nature Communications on May 4, researchers describe a new structure found in an aqueous solution of an amphiphilic copolymer, called a bilayer-folded lamellar mesophase, that has been discovered through a random copolymer sequence.

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[renhe1]

Styrene Block Copolymers Hot Melt Adhesive

https://www.rhadhesive.com/products/sbc-styrene-block-copolymers-hot-melt-adhesive/

Which has a characteristic structure that makes them ideally suited for many adhesive applications.

Styrene Block Copolymers Hot Melt Adhesive List Color Shape Application Principal Component Description Contact Us Now

SBC All-purposed Label Glue Yellow Block Package Adhesive SBC Excellent bonding strength, low-temperature resistance, fast setting time, no wire drawing. suitable for multiple packaging materials, like plastic bottles, iron cans, glass, fabric, etc.

SBC Paper Bag Yellow Block Package Adhesive SBC Excellent bonding strength, low order. suitable for paper bags, which can be used to bond the bottom, side, and a string of paper bags.

SBC Spectacle Case Yellow Block Package Adhesive SBC Excellent initial viscosity, excellent bonding strength, stable, odorless. Suitable for spectacle cases with various substrates.

SBC Velcro / Hook & Loop Translucent Block Footwear & Textile Adhesive SBC High bonding strength, cost-effective, suitable for velcro in footwear.

SBC Seat Assmbly Translucent Block Automotive Adhesive SBC Excellent temperature resistance from -20 to 90℃, high bonding strength, environmental friendly suitable for seat assemble in autos, also can be used for baby car seats.

SBC Ceilling Assmbly Yellow Block Automotive Adhesive SBC Excellent temperature resistance (90℃), high bonding strength, environmentally friendly suitable for car ceiling assemble.

SBC Bed Mattress Yellow Block Household Adhesive SBC Moderate viscosity, easy operation, odorless, cost-effective. Suitable for spring combination for mattresses and sofas.

SBC Anti-slip Glue for Carpet White Granule Household Adhesive SBC Excellent anti-slip performance, cost-effective. Suitable for different substrates, which is operating on the back of the carpet.

[materialsscienceandengineering]

Controlling the length of supramolecular polymers

Systems made up of one supramolecular polymer are well understood, but much remains unknown for systems involving the combination of multiple supramolecular polymers, such as what affects the length of the resulting copolymers. For her Ph.D. research, Elisabeth Weyandt examined how the length of these copolymers change. Weyandt defended her thesis at the department of Chemical Engineering & Chemistry on September 17.

In conventional polymers, like those used in plastics, monomers are joined together by covalent bonds. However, in supramolecular polymers things are a little different as monomers are connected by a combination of weaker, non-covalent bonds like hydrogen bonding or π-π stacking.

Single component supramolecular polymer systems are well understood but moving from single to multi-component systems to obtain functional supramolecular materials and systems remains challenging. When mixing several supramolecular components, the aggregate length is affected, which in turn affects material properties.

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[materialsscienceandengineering]

New copolymer binder to extend the life of lithium ion batteries

Anyone who has owned a smartphone for over a year is most likely aware that its built-in lithium (Li)-ion battery does not hold as much charge as when the device was new. The degradation of Li-ion batteries is a serious issue that greatly limits the useful life of portable electronic devices, indirectly causing huge amounts of pollution and economic losses. In addition to this, the fact that Li-ion batteries are not very durable is a massive roadblock for the market of electric vehicles and renewable energy harvesting. Considering the severity of these issues, it is no surprise that researchers have been actively seeking ways to improve upon the state-of-the-art designs of Li-ion batteries.

One of the major causes for the drop in capacity over time in Li-ion batteries is the degradation of the widely used graphite anodes—the negative terminals in batteries. The anode, together with the cathode (or the positive terminal) and the electrolyte (or the medium that carries the charge between two terminals), provide an environment where the electrochemical reactions for the charging and discharging of the battery can take place. However, graphite requires a binder to prevent it from falling apart with use. The most widely adopted binder today, poly(vinylidene fluoride) (PVDF), has a series of drawbacks that render it far from an ideal material.

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