Polyethylene (PE) is made by the reaction of multiple ethylene molecules in the presence of a catalyst to break the double bond and connect the carbon atoms into a chain. The longer the chain, the higher the molecular weight. Polymers can have molecular weights in the millions. Uses ...
3. There are reports that polymers that can polymerize with plasma to form reverse osmosis wax are used in sealed manned spacecraft; they can also be used as corrosion inhibitors, catalysts and solvents. References [1] Mohanazadeh F, Zolfigol M A, Sedrpoushan A, et al. ChemInform Abstract...
In 1856, W H Perkins was an 18yr old student trying to synthesize quinine. The reaction failed, and, as is so common with failures in the lab, he ended up with a nasty, black solid residue in the bottom of ...
versatile tool to synthesize and process organic and inorganic polymeric biomaterials, and discusses the unmet goals and the perspectives for a technology that probably has the potential to make biomaterials more accessible pharmaceutical excipients and the products that involve them more affordable to ...
nanocomposite hydrogels (NC hydro-gels). These materials show surprising extensibility with improved toughness when compared to hydrogels that were cross-linked by small molecules such as N,N-methylenebisacrylamide.In another study Wang et al. used Laponite and dendritic polymers to synthesize phy[...
Explain how to make 2 L of 0.17 N HCl. Describe the Bayer process. What can nucleosynthesis do? Describe the mechanism of the polymerization of styrene. How to synthesize the anesthetic Tutocaine hydrochloride from 2-butanone? How is copper (II) sulfate formed from copper oxide and sulfuric ...
Aqueous micellar solutions of F68 (PEO(78)-PPO(30)-PEO(78)) and P103 (PEO(17)-PPO(60)-PEO(17)) triblock polymers were used to synthesize gold (Au) nanoparticles (NPs) at different temperatures. All reactions were monitored with respect to reaction time and temperature by using UV-visib...
“We now have a really good way to synthesize peptides with amino acids and hydroxy acids working together that could have been common on the early Earth,” he said. “Even today, hydroxy acids are found with amino acids in living organisms – and in some meteorite samples that have been...
The ability to synthesize nanoscale building blocks with precisely controlled size and composition and then to assemble them into larger structures with unique properties and functions will revolutionize segments of the materials manufacturing industry.Nanotechnology is expected to bring about lighter, ...
By definition, you can't reason your way to anything really new, so you must journey into the unknown. 翻译: 如果你想发现新的事物,千里之行的第一步就是要学会与不确定性共存,并学会接受失败如常,因为寻找未知事物的风险就像成为一名从不系安全绳的高空杂技演员一样大。