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Questions and Answers
Which type of polymerization involves the exclusive reaction between monomer and active site on the polymer chain, with the regeneration of the active site at the end of each growth step?
Which type of polymerization involves the exclusive reaction between monomer and active site on the polymer chain, with the regeneration of the active site at the end of each growth step?
What are initiators in polymerization?
What are initiators in polymerization?
In addition polymerization, which type of initiator classification is based on the type of initiator used?
In addition polymerization, which type of initiator classification is based on the type of initiator used?
What are the three steps involved in kinetic chain reaction in chain polymerization?
What are the three steps involved in kinetic chain reaction in chain polymerization?
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Which type of addition polymerization involves a single initiating species causing the growth of polymer chain?
Which type of addition polymerization involves a single initiating species causing the growth of polymer chain?
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Study Notes
Types of Polymerization
- Living polymerization involves exclusive reactions between monomers and the active sites on polymer chains, regenerating the active site after each growth step.
Initiators in Polymerization
- Initiators are substances that trigger the polymerization process by generating reactive species, which start the chain reaction.
Initiator Classification in Addition Polymerization
- In addition polymerization, initiators can be classified based on their type, commonly divided into:
- Free-radical initiators
- Ionic initiators
- Ziegler-Natta initiators
Kinetic Chain Reaction Steps in Chain Polymerization
- The kinetic chain reaction involves three critical steps:
- Initiation: Formation of the active center (free radicals or ions).
- Propagation: Repeated addition of monomers to the active center, resulting in chain growth.
- Termination: Processes that stop chain growth, either through combination or disproportionation of active chains.
Single Initiating Species in Addition Polymerization
- Free radical polymerization is characterized by a single initiating species that causes the growth of the polymer chain, typically involving a free radical generator.
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Description
Test your knowledge on the general mechanism of polymerization and the different types of polymerization, including addition polymerization, condensation polymerization, and chain polymerization.
