Producing Biobased Polyesters with Tunable Properties
Written by AZoMMar 3 2021
As far as green chemistry is concerned, identifying novel and lasting solutions to the material needs is one of the main targets.
CIQ ACS kleij ginger root. Image Credit: ICIQ/Francesco Della Monica.
The countless plastics used by people in their everyday life, right from mattresses to food and cars, are mainly made from oil-based monomers that form the building blocks of polymers. Determining bio-based monomers for polymer synthesis is an appealing way to realize more lasting solutions in the area of materials development.
In a study published in the
ACS Sustainable Chemistry & Engineering journal, scientists from the Kleij group describe a new method to make biobased polyesters with tunable properties. The team has been developing the multifunctional structure of the terpene β-elemene: three double bonds that exhibit unique reactivity, thus enabling a selective transformation of such bonds and h
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IMAGE: Photograph of a skeleton of the early non-mammalian synapsid (ancient mammal relative) Edaphosaurus on display at the Field Museum of Natural History. view more
Credit: Photograph by Ken Angielczyk
The backbone is the Swiss Army Knife of mammal locomotion. It can function in all sorts of ways that allows living mammals to have remarkable diversity in their movements. They can run, swim, climb and fly all due, in part, to the extensive reorganization of their vertebral column, which occurred over roughly 320 million years of evolution.
Open any anatomy textbook and you ll find the long-standing hypothesis that the evolution of the mammal backbone, which is uniquely capable of sagittal (up and down) movements, evolved from a backbone that functioned similar to that of living reptiles, which move laterally (side-to-side). This so called lateral-to-sagittal transition was based entirely on superficial similarities between non-mammalian synapsids, the exti
Merger of Two Boson Stars Could Explain Existence of Dark Matter
Written by AZoQuantumFeb 25 2021
An international research team has now demonstrated that the heaviest collision of black holes to be ever visualized and created by the gravitational-wave GW190521 could be more mysterious than previously believed that is, the merger of a pair of boson stars.
Illustration of a merger of two boson stars. Image Credit: Nicolás Sanchis-Gual y Rocío García Souto.
The new study would be the first proof of the presence of these theoretical objects that represent one of the key candidates to create dark matter, which constitutes 27% of the Universe.
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