Most macromolecules are made from single subunits, or building blocks, called monomers.The monomers combine with each other using covalent bonds to form largermolecules known as polymers. In doing so, monomers release water molecules as byproducts. ... In the process, a water molecule is formed....
Since polymers are insulating materials, it is advisable to cover their surfaces with a conductive material such as gold using a sputter coater (such as Coxem SPT-20) or work in low vacuum conditions (LV) to reduce the charge effect caused by the incident electron beam during SEM observations...
These are typically materials with tertiary amine functionality that can interact with the oxides of nitrogen in air pollution. For certain applications, antimildew additives are added to the polyurethane product. After the polymers are formed and removed from the reaction vessels, they are naturally...
What is a Polyolefin? Polyolefins are a class of polymers formed through the combining of olefin monomers, also known asalkenes. Alkenes are hydrogen-carbon compounds with at least one carbon double bond. Once olefins/alkenes undergo polymerization, they link with one another to form a polyolefin....
Explain how both nucleic acids and proteins are polymers? How does an RNA virus work? Why is it called a transfer RNA? Describe one similarity between DNA and RNA. What is the difference between a polypeptide and a protein and how is a pro...
The raw material used to make carbon fiber is called the precursor. 90% of the carbon fibers produced are made from polyacrylonitrile. The remaining 10% is made from rayon or petroleum pitch. All of these materials are organicpolymers. The characterization of organic polymers is formed by a lo...
How is a micelle formed from amphiphilic polymers in a dialysis process: Insight from mesoscopic studiesDissipative particle dynamicsDialysisMicelle formationDrug deliverySelf-assembly of amphiphilic polymers into micelles in dialysis process is dynamic, and the phase transition process is therefore very ...
“Polymers for the Sustained Release of Proteins and Other Macromolecules,” by Robert Langer and Judah Folkman (Nature,1976). The Innovation and Diffusion Podcast,by John Van Reenen and Ruveyda Gozen. Episode Video
Formed from hydrocarbons, hydrocarbon derivatives, or sometimes from silicon, polymers are the basis not only for numerous natural materials, but also for most of the synthetic plastics that one encounters every day. Polymers consist of extremely large, chain-like molecules that are, in turn, made...
Molecules are composed of atoms that have bonded and released the extra energy with them as bond formation energy. This bond can either be ionic or covalent. It is formed whennitrogen of NH3 donates its lone pair of electrons into empty orbital of boron in BF3. ...