Suspension polymerization ( 2 ) is a form of r…

Suspension polymerization ( 2 ) is a form of radical polymerization in which the monomers are added to a solvent (often water) in which they are soluble, then reacted kinetically (i.e. mixed together to prompt a reaction). It is a widely used technique that is fairly easy to control, simply the various components of the reaction such as stirring speed or the volume fraction of the monomer present.

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Interfacial polymerization ( 2 ) is a form of …

Interfacial polymerization ( 2 ) is a form of step-growth polymerization that creates thin film (or other nanostructured) polymers at the interfaces of two materials. These two materials are usually two immiscible liquids, with a different monomer in each liquid, reacting at the interface, but liquid-solid interactions as well as liquid-in-liquid emulsion reactions are also possible. 

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Precipitation polymerization ( 2 ) is a method…

Precipitation polymerization ( 2 ) is a method of polymerization in which a monomer and initiator are added to a solvent in which they are soluble in, but in which the resulting polymer is insoluble. As a result, particles of the polymer grow within the solution as the reaction proceeds, precipitating from the solvent.

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Solution polymerization ( 2 ) is a method of p…

Solution polymerization ( 2 ) is a method of polymerization in which a monomer and initiator are added to a solvent in which they (and the resulting polymer) are soluble in, creating a solution. When using this method the remaining solvent must then be removed at the end of the reaction, so solution polymerization is common with polymers in which the presence of a solvent is desired, such as varnishes or adhesives. 

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Emulsion polymerization ( 2 ) is a form of pol…

Emulsion polymerization ( 2 ) is a form of polymerization in which a surfactant is mixed in water with a water soluble initiator and (typically) a non-water soluble monomer, ensuring that the polymerization reaction is carried out within the micelles formed by the surfactants. (Other materials can be used, but the oil-in-water form of emulsion polymerization is the most common.) Emulsion polymerizations are always radical polymerizations. 

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Bulk (or mass) polymerization ( 2 ) is a form …

Bulk (or mass) polymerization ( 2 ) is a form of polymerization in which only a monomer and an initiator are present for the reaction (i.e. no solvents are added). It can be used for step growth and chain growth polymers, though it is more commonly used for step growth. These factors make bulk polymerization a very easy, simple, and inexpensive method, but the reaction can be difficult to control, particularly since viscosity increases as the reaction nears completion. 

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Plasma (or glow discharge) polymerization ( 2 …

Plasma (or glow discharge) polymerization ( 2 ) is a form of polymerization in which the reaction is initiated by a gas discharge generated by plasma sources. Glow discharge, specifically, deals with the creation free electrons that collide with neutral molecules, transforming those neutral molecules into reactive species which then trigger the polymerization. Plasma polymers grow off of substrates, allowing for the formation of polymer films, and have a relatively high proportion of branched or cross-linked chains. 

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Metal mediated radical polymerizations are a f…

Metal mediated radical polymerizations are a form of radical polymerizations which are mediated, rather than initiated, by metal catalysts (cobalt and copper based catalysts are particularly common). These mediators help control the rates of the reactions, and thus the structure and molecular weight of the resulting polymers. Atom transfer radical polymerizations are often mediated by metal complexes. 

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Catalytic chain transfer ( 2 ) is a process fo…

Catalytic chain transfer ( 2 ) is a process for modifying radical polymerization reactions to allow for better control of the resulting polymers. It is most often used to create shorter chain polymers or low molecular weight polymers. Complexes of Co, Cr, Fe, Mo, and other metals are common catalysts for this process. 

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