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What is Frontal Polymerization?

frontal polymerization
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What is Frontal Polymerization?

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Frontal polymerization is a process in which the polymerization propagates through the reaction vessel. The three types of frontal polymerizations are thermal frontal polymerization (TFP), which uses an external energy source to initiate the front, photofrontal polymerization in which the localized reaction is driven by an external UV source, and isothermal frontal polymerization (IFP), which relies on the Norrish-Trommsdorff, or gel effect, that occurs when monomer and initiator diffuse into a polymer seed (small piece of polymer). Thermal frontal polymerization begins when a heat source contacts a solution of monomer and thermal initiator. Alternatively, a UV source can be applied if a photoinitiator is also present.) The area of contact (or UV exposure) has a faster polymerization rate, and the energy from the exothermic polymerization diffuses into the adjacent region, raising the temperature and increasing the reaction rate in that location. The result is a localized reaction zone

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