27.8: Polymers and Polymerization Reactions - Chemistry …
There are two general types of polymerization reactions: addition polymerization and condensation polymerization. In addition polymerization, the monomers add to one another in such a way that the polymer contains all the atoms of the starting monomers. Ethylene molecules are joined together in long chains.
Polymerization: Definition, Types, and Examples - Chemistry Learner
Polymerization is a chemical reaction that involves the formation of long-chain molecules known as polymers from smaller units called monomers. Polymerization reaction occurs when multiple monomers chemically bond together, forming large, complex structures. The polymerization process can be either natural or artificial.
Polymerization - Wikipedia
Step-growth and chain-growth are the main classes of polymerization reaction mechanisms. The former is often easier to implement but requires precise control of stoichiometry. The latter more reliably affords high molecular-weight polymers, but only applies to certain monomers.
Polymerization - Definition, Types, Reactions, Polymerization …
The most simple polymerization reactions involve the formation of polymers from alkenes via free-radical reaction. Polyethylene, which is one of the most commercially important polymers, is prepared through such a polymerization process (the reactant monomer used here is ethylene).
Chemical reaction - Polymerization, Monomers, Polymers
2024年12月16日 · 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 .
Polymerization - Definition, Types, Mechanism, & Examples
2023年10月19日 · Polymerization consists of three steps that include, Initiation; Propagation; Termination; The process of completing the polymerization reaction involves two different methods which include the step-growth mechanism and the chain-growth mechanism.
Polymer Chemistry: Polymerization Reactions - Engineering …
In a step-reaction polymerization reaction, sometimes called condensation polymerization, the polymer chains grow by reactions that occur between two molecular species. An example is the polymerization reaction involving terephthalic acid and ethylene glycol, both of …
Polymerization Reactions - Division of Chemical Education, …
The simplest way to catalyze the polymerization reaction that leads to an addition polymer is to add a source of a free radical to the monomer. The term free radical is used to describe a family of very reactive, short-lived components of a reaction that contain one or more unpaired electrons.
13.10: Polymerization Reactions - Chemistry LibreTexts
2024年7月16日 · Polymers generally form either from an addition reaction or a condensation reaction. The "small molecules" that polymers are comprised of are often much more complicated than the compounds we have been exploring earlier in this chapter.
3.8: Polymerization Mechanism - Chemistry LibreTexts
2020年6月22日 · Polymers generally form either from an addition reaction or a condensation reaction. An addition polymer is a polymer formed by chain addition reactions between monomers that contain a double bond. Molecules of ethene can polymerize with each other under the right conditions to form the polymer called polyethylene.