Polymers are macromolecules in which there is a repeating unit called a monomer. The name comes from the Greek: poly = many + mere = parts, ie many parts. The reaction that forms polymers is called polymerization.
To demonstrate the importance of studying polymers, it is enough to mention that the variety of objects we have access to today is due to the existence of synthetic polymers, such as: plastic bags, car bumpers, water pipes, non-stick pans, blankets, glues, paints, chewing gum, etc.
In this section you will learn how polymerization takes place and how chemists produce polymers. You will also learn about the diversity of polymers currently existing and how they were obtained. And also: environmental awareness to control the disposal of these materials in the environment. Don't miss the opportunity to browse the universe of polymers!
Do not stop now... There's more after the advertising ;)
By Líria Alves
Graduated in Chemistry
Addition polymerization consists of the reaction between molecules of the same substance, in which in its structure, there is a double bond between two carbon atoms, forming only the polymer. (Polyethylene is an example of a polymer formed by addition reaction). Consider the following substances:
I. 3-bromopropene-1 (C3H5Br)
II. tetrafluorethane (C2H2F4)
Chemical reactions can lead to the formation of products of commercial interest. Indicate the correct proposition(s).
01. Complete trimerization of 3 moles of acetylene produces 2.5 moles of benzene.
02. Carboxylic acid esters are the main components of soybean oil.
04. Examples of natural polymers are PVC, sucrose and polyester.
08. Teflon, chemically, is polytetrafluoroethylene.
16. The vulcanization of rubber is based on the reaction of natural latex with controlled amounts of ozone.
32. Bakelite, the oldest synthetic polymer, is obtained by condensing common phenol with formaldehyde.
