Final answer:
The first templated polymerization process is called free radical polymerization, where a free radical initiates a chain reaction, leading to the formation of long chains of monomers like ethylene turning into a polymer such as polyethylene.
Step-by-step explanation:
The first templated polymerization process is typically referred to as free radical polymerization. This process is fundamental in the synthesis of polymers and consists of three main steps: initiation, propagation, and termination. During initiation, a free radical is created by the homolytic cleavage of a weak bond, such as the O–O bond in benzoyl peroxide, which can be induced through heat or a UV-photon. This radical then adds to the π bond of a monomer like ethylene, and this addition produces a new radical that is capable of further reaction.
During the propagation phase, the newly formed radical can continuously add to other ethylene monomers, extending the polymer chain in repeating units of -CH2-. This chain reaction can be represented by the reaction of several monomer units and can continue until it is terminated. The termination typically occurs through various mechanisms, such as coupling or disproportionation, which neutralizes the radical species, thus concluding the reaction. The final product of this process is a polymer, like polyethylene, which is widely used for packaging due to its properties as a solid material when polymerized.