Nomenclature of polymers on the basis of source and trade.

Source Based nomenclature of polymers

1) Homopolymers.

Homopolymers are made of only one type of monomers. Homopolymers are named on the name of the monomers i.e source from which it is derived.

For example; Poly( methyl methacrylate), Polyethylene etc.

Compound for example in case of Poly(vinyl oxirane), it indicates two structure.

In such case class name: monomer name is given to clarify.

In case of Homopolymer with no locants, the monomer name is used without any brackets. For example 'Polystyrene'. Some more examples are given below.

2) Copolymers.

Copolymers are made of more than one type of monomers. Copolymers are name using qualifiers. A qualifier may be a connective between monomers (c) or a prefix(P).

Given below table is qualifiers for Copolymers.

Qualifiers for Copolymers.

For example; poly(styrene-co-isoprene), polystyrene-graft-poly(ethylene oxide).

Note: The qualifiers should be in small letters.

3) Non Linear Polymers.

The qualifiers for non Linear Copolymers are given below.

Qualifiers for non linear copolymers.

For example; cyclo-polystyrene-graft-polyethylene, polystyrene-comb-polyisoprene.

Trade based nomenclature of polymers or trade names.

Trade names are given to describe specific materials manufacture by a specific company or under the license of that company.

1) Bakelite is the trade name for phenol formaldehyde condensation polymer given by Baekeland.

2) A sweater containing Orlon as content contains poly(acrylonitrile).

3) Carina, Trulon, Velon, Opalon are trade name for Poly(vinyl chloride) manufacture by different companies.

4) Teflon is the trade name for Polytetrafluoroethylene given by DuPont. Next

Comments

Difference between organic and inorganic polymers.

Difference between organic and inorganic polymers. Definition Organic polymers are the polymers that essentially contain carbon atom in the backbone. Inorganic polymers are the polymers that have no carbon atom in the backbone. Structure Most organic polymers have simple structures. Almost all inorganic polymers are highly branched and have complex structures. Electrical Conductivity In most of the aqueous solutions, organic polymers are typically poor conductors of electricity and heat. Inorganic polymers in aqueous solutions are good conductors of electricity, this is because they have high ability to ionise and this makes them better conductors. Flammability Organic polymers are flammable whereas inorganic polymers are nonflammable. Effect on nature Organic polymers are environmental friendly as these are biodegradable. Inorganic polymers are not environmental friendly as these are non biodegradable. Examples Organic polymers include polysaccharide...

Monomers.

Monomers. A monomer is a molecule that can be reacted together with other monomer molecules to form a larger polymer chain. Some monomers are given below with their polymers . Tetrafluoroethene ; Tetrafluoroethene is the monomer of Teflon . Teflon and its monomer. Acrylonitrile (vinyl cyanide); Acrylonitrile is the monomer of Polyacrylonitrile . Polyacrylonitrile and its monomer. Isoprene; Isoprene is the monomer of Polyisoprene (natural rubber). Polyisoprene and its monomer. Chloroprene; Chloroprene is the monomer of Neoprene . Neoprene and its monomer. Vinyl chloride; Vinyl chloride is the monomer of Poly(vinyl chloride) . Polyvinyl chloride and its monomer. Vinyl acetate; Vinyl acetate is the monomer of Poly(vinyl acetate). Poly(vinyl acetate) and its monomer. Propylene; Propylene is the monomer of Polypropylene . Polypropylene and its monomer. Styrene; Styrene is the monomer of Polystyrene . Polystyrene and i...

Determination of molecular weight of polymers by viscosity method.

Determination of molecular weight of polymers by viscosity method. It is a simple method for determining the molecular weight of polymers. Addition of polymers in the solvent increases the viscosity of the solvent, due to introduction of inhomogeneities by the polymers. If η₀ is the viscosity of the solvent and η is the viscosity of the solution at the same temperature, then the relative viscosity is given by Relative viscosity. Specific viscosity: It is defined as the relative increase in viscosity and is given as Specific viscosity. Reduced viscosity: It is defined as the relative increase in viscosity per unit concentration (C) of polymer and is given as Reduced viscosity. Intrinsic viscosity: The reduced viscosity is dependent on concentration (C). If a graph is plotted between reduced viscosity vs concentration then the extraplotation value when C=0 is called intrinsic viscosity. Intrinsic viscosity. Graph of reduced vi...

Polymers

Search This Blog