Polyester is a man-made fibre that is extensively produced in factories for clothing and home furnishings.
Commercial chitosan is derived from the shells of shrimp and other sea crustaceans, including Pandalus borealis, pictured here.
Indeed, polyester has taken the world by storm. Its wide use reflects its range of pleasing properties, high resilience, stretch and recovery; good strength and dimensional stability; it is also highly wrinkle resistant. The insoluble nature of polyester fibres when exposed to water also limits enzymatic hydrolysis to the surface, thus improving the fibre surface wettability.
However, polyester does not take dye well. That is, it is not easy to colour polyester. Polyester fibres have definitive hydrophobic character and high degree of crystallinity, thus being difficult to penetrate with dyes.
Detours may make batteries better
10.12.2019 | Rice University
How to induce magnetism in graphene
10.12.2019 | Empa - Eidgenössische Materialprüfungs- und Forschungsanstalt
Graphene, a two-dimensional structure made of carbon, is a material with excellent mechanical, electronic and optical properties. However, it did not seem suitable for magnetic applications. Together with international partners, Empa researchers have now succeeded in synthesizing a unique nanographene predicted in the 1970s, which conclusively demonstrates that carbon in very specific forms has magnetic properties that could permit future spintronic applications. The results have just been published in the renowned journal Nature Nanotechnology.
Depending on the shape and orientation of their edges, graphene nanostructures (also known as nanographenes) can have very different properties – for example,...
Using a clever technique that causes unruly crystals of iron selenide to snap into alignment, Rice University physicists have drawn a detailed map that reveals...
University of Texas and MIT researchers create virtual UAVs that can predict vehicle health, enable autonomous decision-making
In the not too distant future, we can expect to see our skies filled with unmanned aerial vehicles (UAVs) delivering packages, maybe even people, from location...
With ultracold chemistry, researchers get a first look at exactly what happens during a chemical reaction
The coldest chemical reaction in the known universe took place in what appears to be a chaotic mess of lasers. The appearance deceives: Deep within that...
Abnormal scarring is a serious threat resulting in non-healing chronic wounds or fibrosis. Scars form when fibroblasts, a type of cell of connective tissue, reach wounded skin and deposit plugs of extracellular matrix. Until today, the question about the exact anatomical origin of these fibroblasts has not been answered. In order to find potential ways of influencing the scarring process, the team of Dr. Yuval Rinkevich, Group Leader for Regenerative Biology at the Institute of Lung Biology and Disease at Helmholtz Zentrum München, aimed to finally find an answer. As it was already known that all scars derive from a fibroblast lineage expressing the Engrailed-1 gene - a lineage not only present in skin, but also in fascia - the researchers intentionally tried to understand whether or not fascia might be the origin of fibroblasts.
Fibroblasts kit - ready to heal wounds
03.12.2019 | Event News
15.11.2019 | Event News
15.11.2019 | Event News
10.12.2019 | Architecture and Construction
10.12.2019 | Information Technology
10.12.2019 | Life Sciences