What catalyst is used in condensation polymerization?
Catalysts commonly used in condensation reactions include acids, bases, the cyanide ion, and complex metal ions.
What are 5 examples of condensation polymers?
Examples of natural condensation polymers include cellulose, starch, and polypeptide chains of proteins. Several synthetic condensation polymers discussed include nylon, kevlar, polyester, Bakelite, Melamine, polycarbonates, polyurethanes, epoxies.
What does an acid catalyst do in step-growth polymerization?
Kinetics. The kinetics and rates of step-growth polymerization can be described using a polyesterification mechanism. The simple esterification is an acid-catalyzed process in which protonation of the acid is followed by interaction with the alcohol to produce an ester and water.
Which polymers are prepared by condensation polymerization?
Condensation polymerization is used to make Dacron, Nylon-6.6, and Bakelite.
Is polyethylene terephthalate a condensation polymer?
Polyethylene terephthalate (PET), or polyethylene terephthalic ester (PETE), is a condensation polymer produced from the monomers ethylene glycol, HOCH2CH2OH, a dialcohol, and dimethyl terephthalate, CH3O2C–C6H4–CO2CH3, a diester. PETE fibers are manufactured under the trade names of Dacron and Fortrel.
What is condensation polymerization in chemistry?
A condensation polymerization is a form of step-growth polymerization in which monomers and/or oligomers react with each other to form larger structural units while releasing smaller molecules as a byproduct such as water or methanol.
Why condensation polymerization is called step growth polymerization?
Characteristics of Condensation Polymers Condensation polymers form more slowly than addition polymers and often require suitable lab environments, like the addition of heat. The polymers are generally lower in molecular weight.
Why condensation polymerisation is called step growth polymerisation?
Condensation polymerization is also known as step growth polymerization. It involves a repetitive condensation reaction between two bi-functional monomers. Here loss of some simple molecule such as water or alcohol takes place to give high molecular mass condensation polymer.
How is condensation polymerization different from addition polymerization?
The main difference between addition and condensation polymerization is that in addition polymerization the polymers are formed by the addition of monomers with no by-products whereas in condensation polymerization, the polymers are formed due to the condensation more than one different monomers resulting in the …
