Main distinction – addition Polymerisation vs Condensation Polymerisation

Polymerisation is the process of authorized a huge number of tiny molecules to do very big molecules. Monomers room the building blocks that polymers. Based upon the nature the the chemical reaction involved in the formation of a polymer, there space two species of polymerisation reactions: addition polymerisation and also condensation polymerisation. Addition polymerisation produces addition polymers through the enhancement of olefinic monomers there is no the development of any by-product.

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In contrast, condensation polymerisation to produce condensation polymers through the intermolecular condensation the two various monomers with the development of little molecules such as HCl, water, ammonia, etc., as by-products. This is the main distinction between addition polymerisation and condensation polymerisation. In addition to this main difference, there are many much more differences between these 2 polymerisation reactions.

This short article discusses,

1. What is enhancement Polymerisation? – Process, Features, type of Polymers Produced, Examples

2. What is Condensation Polymerisation? – Process, Features, form of Polymers Produced, Examples

3. What is the difference Between addition Polymerisation and also Condensation Polymerisation?

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What is enhancement Polymerisation

Addition polymerisation is the addition of one monomer to another monomer to kind long chain polymers. This procedure does no produce any kind of by-products. Hence, the molecular weight of the polymer will be one integral lot of of monomer’s molecule weight. The monomers involved in these reactions must be unsaturated (double or triple bonds have to be present). During the reaction, unsaturated bonds open up and type covalent bonds with adjacent monomer molecules to type long chain polymers. There are three types of instrument in addition polymerisation, namely; free-radical mechanism, ionic mechanism, co-ordination mechanism. Polymers created by the addition polymerisation procedure are dubbed addition polymers. Instances of enhancement polymers include polyvinyl chloride or PVC, poly(propylene), poly(tetrafluoroethene) or TEFLON, etc.


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Formation that PVC


What is Condensation Polymerisation

Condensation polymerisation is the process of intermolecular condensation the two various monomers to kind a huge chain of polymer molecules. In this process, linking of every two monomer molecule will result in a basic molecule such together HCl, ammonia, water, etc., together a by-product. Hence, the molecular load of the polymer will be the product of the level of polymerisation and the molecular load of the repeating unit. The polymers resulted as result of condensation polymerisation are referred to as condensation polymers. Bakelite, nylon and also polyester are some usual examples of condensation polymers.


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The reaction that 1,4-phenyl-diamine (para-phenylenediamine) and also terephthaloyl chloride to produce Aramid


Difference Between enhancement Polymerisation and also Condensation Polymerisation

Nature that the Monomer

Addition polymerisation: Monomer must have actually at the very least a dual or triple bond.

Condensation polymerisation: Monomer must have at least two comparable or various functional groups.

Nature of Polymer Formation

Addition polymerisation: Addition of monomer outcomes in a polymer.

Condensation polymerisation: Monomers condense to give a polymer.

By-products

Addition polymerisation: This polymerisation no produce any kind of by-products.

Condensation polymerisation: This polymerisation outcomes in byproducts such as water, HCl, CH3OH, NH3, etc.

Molecular Weight

Addition polymerisation: Molecular weight of the result polymer is one integral multiple of monomer’s molecule weight.

Condensation polymerisation: Molecular load of the result polymer is no an integral multiple of monomer’s molecule weight.

Size of result Polymers

Addition polymerisation: The reaction results in high molecular load polymers in ~ once.

Condensation polymerisation: The molecular weight of the polymer rises steadily v the reaction.

Reaction Time

Addition polymerisation: much longer reaction time outcomes in higher yields, however has a minute impact on the molecular weight of the polymer.

Condensation polymerisation: much longer reaction times are an essential to obtain higher molecular load of polymers.

Nature that the Polymers Produced

Addition polymerisation: enhancement polymerisation produces thermoplastics.

Condensation polymerisation: Condensation polymerisation produce thermosets.

Polymer Chain

Addition polymerisation: addition polymerisation results in homo-chain polymers.

Condensation polymerisation: Condensation polymerisation outcomes in hetero-chain polymers.

Examples of typical Polymers

Addition polymerisation: Polyethylene, PVC, etc.

Condensation polymerisation: Bakelite, nylon, polyester, etc.

Catalysts

Addition polymerisation: Radical initiators, Lewis acid or bases room catalysts in this process.

Condensation polymerisation: Mineral acids and bases room catalysts in this process.

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References:


Gopalan, R., Venkappayya, D., & Nagarajan, S. (2010). Textbook of design chemistry (4th ed.). Brand-new Delhi: Vikas Publishing home Pvt.