Thermoplastics are very long polymer chains with a high molecular weight and can be either crystalline or amorphous. The high molecular weights of polymers impart their useful properties such as good mechanical properties and have the ability to be molded into various types of parts (injection molded...
What are Polymers and Why are They InterestingJ Marko
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Intrinsic self-healing materials are composed of a variety of polymers that restore their own structural integrity without any need of outside help. This occurs because there is local increase in the mobility of the polymeric chains, which allows cracks to be repaired on their own. Thanks to th...
Steroids such as cholesterol, used by the human body to produce hormones and other major components of the nervous system, are not considered true polymers. While they are lipid molecules, incapable of being dissolved in water, their bonds form a ring, fused with carbon, rather than a chain....
57% of chlorine (derived from industrial grade salt). 43% of carbon (derived predominantly from oil/gas via ethylene) are the percentages of components needed for the PVC to be formed.It is less dependent than other polymers on crude oil or natural gas. They are nonrenewable, and hence ca...
Polymers are formed when several single units of molecules (referred to as monomers) are joined together by a chemical bond. In the case of glucose, a simple sugar monomer, or what we can specifically call a monosaccharide (mono-single, saccharide - sugar), it combines with other glucose ...
The nucleic acids DNA and RNA are polymers composed of many individual nucleotides. Each nucleotide consists of three components: a phosphate group,...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough ...
1 What are polymers?A polymer is a large molecule (‘macromolecule’) composed of structural units typicallyconnected by covalent chemical bonds. The basic unit of a polymer is amerandpolymeans‘many’,sotheword‘polymer’means a substance with many basic units. Thereare different types of mers...
of polypropylene the density of polypropylene is known to range from 0.89 to 0.92 grams per cubic centimetre. varying properties are exhibited by different types of polypropylene, which is usually dependent on the crystallinity, molecular weight distribution, length of the chain, and the isotacticity...