What is the rule for naming a polymer?
To name an addition polymer with only one monomer, you insert the name of the monomer in parentheses after the “poly” prefix: for example, “poly(methyl methacrylate).” If the name could indicate several different compounds, the class of polymer can be used to clarify, such as “polyether.” If the monomer is one word …
How do you name polymers Iupac?
To clarify, the polymer is named using the polymer class name followed by a colon and the name of the monomer, i.e., class name:monomer name. Thus on the left and right, respectively, are polyalkylene:vinyloxirane and polyether:vinyloxirane.
What is a good definition of a polymer?
Polymers are materials made of long, repeating chains of molecules. The materials have unique properties, depending on the type of molecules being bonded and how they are bonded. Some polymers bend and stretch, like rubber and polyester. The term polymer is often used to describe plastics, which are synthetic polymers.
What is cru in polymer?
In place of the monomer name used in source-based nomenclature, structure- based nomenclature uses that of the preferred constitutional repeating unit. (CRU). It can be determined as follows: (i) a large enough part of the polymer.
What is the structure of polymers?
Polymers have very large molecules . The atoms in a polymer molecule are joined together by strong covalent bonds in long chains. There are variable numbers of atoms in the chains of a given polymer.
What is an example of polymer?
Examples of synthetic polymers include nylon, polyethylene, polyester, Teflon, and epoxy. Natural polymers occur in nature and can be extracted. They are often water-based. Examples of naturally occurring polymers are silk, wool, DNA, cellulose and proteins.
What are the characteristics of polymer?
Some of the useful properties of various engineering polymers are high strength or modulus to weight ratios (light weight but comparatively stiff and strong), toughness, resilience, resistance to corrosion, lack of conductivity (heat and electrical), color, transparency, processing, and low cost.
What are the types of polymer?
There are 3 principal classes of polymers – thermoplastics, thermosets, and elastomers. Differentiation between these classes is best defined by their behaviour under applied heat. Thermoplastic polymers can be either amorphous or crystalline. They behave in a relatively ductile manner but often have low strength.