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Readers ask: What is polymerisation in chemistry?

polymerization, any process in which relatively small molecules, called monomers, combine chemically to produce a very large chainlike or network molecule, called a polymer. The monomer molecules may be all alike, or they may represent two, three, or more different compounds.

What is polymerization and examples?

A polymer is a large single chain-like molecule in which the repeating units derived from small molecules called monomers are bound together. The process by which monomers are transformed into a polymer is called polymerisation. For example ethylene polymerizes to form polyethylene.

What are types of polymerization?

There are two general types of polymerization reactions: addition polymerization and condensation polymerization. In addition polymerization, the monomers add to one another in such a way that the polymer contains all the atoms of the starting monomers.

What is polymerisation explain the types of polymerisation?

The polymerisation is defined as the chemical process in which the monomers are joined together to form polymers. (b) Condensation polymerisation: When the monomers are added together with the byproduct and require two different types of monomers that join alternately, it is known as condensation polymerisation.

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What is polymerisation technique?

polymerisation technique is also known as Bead or Pearl polymerisation. It is used for the. polymerization of styrene, methyl methacrylate, vinyl chloride, vinyl acetate. Insoluble. monomers can be polymerised by this technique.

What is polymerisation short answer?

Polymerization, any process in which relatively small molecules, called monomers, combine chemically to produce a very large chainlike or network molecule, called a polymer.

What is polymerization in DNA?

Polymerization of Nucleotides ( Phosphodiester Bonds ) Nucleotides are joined together similarly to other biological molecules, by a condensation reaction that releases a small, stable molecule. The 3′ hydroxyl group forms a bond to the phosphorus atom of the free nucleotide closest to the 5′ oxygen atom.

Why does polymerization occur?

When a bond forms between two monomers, each monomer contributes part of the water molecule that is lost; one molecule provides a hydroxyl group, while the other provides a hydrogen. To make a polymer, this reaction is repeated as monomers are added to the chain one by one.

Why do we polymerize?

A basic understanding of polymerization processes is important not only because polymerization affects structure, and hence properties, but also because some processing routes can convert monomers directly to a finished shape. They offer manufacturing industry considerable benefits both in direct and indirect costs.

How do you determine polymerization?

If the monomer has only one reactive group, the polymers that form have low molecular weight. When monomers have two reactive end groups we get linear polymers. And monomers with higher than two reactive groups results in a polymer with a three-dimensional network.

What is polymerisation class 10th?

Polymerization is the process of connecting these monomers together and creating large macromolecules of different sizes and shapes. Polymerization is similar to constructing a large building out of the same type of Lego blocks.

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What is monomeric unit?

A group of atoms, derived from a molecule of a given monomer (def. 1), that comprises any one species of constitutional unit of a polymer. From: monomeric unit in Oxford Dictionary of Biochemistry and Molecular Biology » Subjects: Science and technology — Chemistry.

What is polymerisation of alkenes?

Polymerization is a process by which an organic compound reacts with itself to form a high‐molecular‐weight compound composed of repeating units of the original compound. An example of a cation‐initiated polymerization is the reaction of ethene with sulfuric acid.

What is heterogeneous polymerisation?

Heterogeneous polymerization involves using two or more immiscible liquids stabilized into an emulsion and polymerizing dispersed droplets into a porous particle. When two immiscible liquids are mixed, they form separate phases similar to oil in water.

How do you induce polymerization?

In the case of the bulk polymerization technique, one or more monomers are heated to induce polymerization in the presence of a catalyst. The obtained polymer can be prepared and/or fragmented to become microspheres, and drug surrounding may occur during the polymerization process (Surini et al., 2009).

What is addition and condensation polymerization?

Addition polymerization is the process of repeated addition of monomers that possess double or triple bonds to form polymers. Condensation polymerization is a process that involves repeated condensation reactions between two different bi-functional or tri-functional monomers.

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