What type of process is polymerization?

What type of process is polymerization?

Polymerization: The process of converting a monomer or a mixture of monomers into a polymer. In polymer chemistry, polymerization (American English), or polymerisation (British English), is a process of reacting monomer molecules together in a chemical reaction to form polymer chains or three-dimensional networks.

What is Miniemulsion polymerization technique?

The miniemulsion technique is a particular case in the family of heterophase polymerizations, which allows the formation of functionalized polymers by polymerization or modification of polymers in stable nanodroplets.

What are the two main processes used for polymerization?

There are two basic types of polymerization, chain-reaction (or addition) and step-reaction (or condensation) polymerization.

Which process generates polymers?

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 Ostwald ripening process?

Ostwald ripening (or disproportionation) is the process of disappearance of small particles or droplets by dissolution and deposition on the larger particles or droplets. The driving force for Ostwald ripening is the difference in solubility between the small and the large particles.

What is term micro emulsion?

Definition of microemulsion : an emulsion in which the dispersed phase is in the form of very small droplets usually produced and maintained with the aid of surfactants and having diameters of from 50 to 500 angstroms.

What is polymerization example?

Polymerization reactions are chain reactions, and the formation of Teflon from tetrafluoroethylene is one example. In this reaction, a peroxide (a compound in which two oxygen atoms are joined together by a single covalent bond) may be used as the initiator.

What is step-reaction polymerization?

In step-reaction polymerization the growth reaction proceeds by combination of monomer, oligomer, or polymer molecules with other monomer, oligomer, or polymer molecules.

What is polymerisation give example?

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.

Which of the following is NOT a three step polymerization?

Which one of the following is not the three step polymerisation? Explanation: Step polymerisation or the condensation polymerisation is not the three step polymerisation like initiation, propagation and termination.

What is an example of polymerization?

What is Ostwald ripening emulsion?

In simple terms, Ostwald ripening is the growth of one emulsion droplet at the expense of a smaller one as a result of the difference in chemical potential of the material within the droplets. This difference arises from the difference in the radius of curvature of the drops.

Is Ostwald ripening Reprecipitation?

Ostwald ripening leads to the dissolution of smaller solid grains, diffusion of the solute through the liquid and the re-precipitation of the solid onto large grains.

What is the emulsion process?

Abstract. Emulsification is the process of dispersing two or more immiscible liquids together to form a semistable mixture. In food applications, these two liquids generally consist of an organic (oil) phase and an aqueous (water) phase that is stabilized by the addition of a food-grade emulsifier (surfactant).

How are microemulsions made?

Microemulsions are thermodynamically stable, self-assembled systems comprising droplets (1–100 nm), spontaneously formed upon mixing oil and aqueous phases and stabilized by appropriate surfactants.

Why is polymerization a type of addition reaction?

Explanation: The definition of an addition reaction is that two reactants form one single product with no other reactants. Also, in addition reactions, a double covalent bond is broken. In this case, the C=C bond is broken, and a single long polymer is formed from the reactants.

Which of the following is step polymerization?

Solution : Polyester is a step growth polymer and others are chain growth polymers.