Example
Consider the example of polyethylene terephthalate (PET or "polyester"). The monomers which could be used to create this polymer are ethylene glycol and terephthalic acid:
HO-CH2-CH2-OH and HOOC-C6H4-COOH
In the polymer, there are two structural units, which are -O-CH2-CH2-O- and -CO-C6H4-CO-
The repeat unit is
-CH2-CH2-O-CO-C6H4-CO-O-
Read more about this topic: Structural Unit
Famous quotes containing the word example:
“Our intellect is not the most subtle, the most powerful, the most appropriate, instrument for revealing the truth. It is life that, little by little, example by example, permits us to see that what is most important to our heart, or to our mind, is learned not by reasoning but through other agencies. Then it is that the intellect, observing their superiority, abdicates its control to them upon reasoned grounds and agrees to become their collaborator and lackey.”
—Marcel Proust (1871–1922)