Chain-growth polymerization - Wikipedia
Chain-growth polymerization or chain-growth polymerisation is a polymerization technique where monomer molecules add onto the active site on a growing polymer chain one at a time. [1] There are a limited number of these active sites at any moment during the polymerization which gives this method its key characteristics.
24.2: Chain-Growth Polymers—Addition Polymers
Chain growth ceases when the terminal carbocation combines with a nucleophile or loses a proton, giving a terminal alkene (as shown here). Monomers bearing cation stabilizing groups, such as alkyl, phenyl or vinyl can be polymerized by cationic processes.
2.3: Step Growth and Chain Growth - Chemistry LibreTexts
2021年9月12日 · Step growth and chain growth are two broad classes of polymerization methods. They use monomers with distinct characteristics and display some different growth patterns. Condensation polymerizations take place via a step-growth process.
30.1: Chain-Growth Polymers - Chemistry LibreTexts
Polymers resulting from additions to alkenes monomers are chain-growth polymers. In these processes each addition step results in a longer chain which ends in a reactive site. The mechanism of each addition step is the same, and each addition step adds another monomer to extend the chain by one repeating unit.
31.1 Chain-Growth Polymers - Organic Chemistry - OpenStax
Chain-growth polymers are produced by chain-reaction polymerization in which an initiator adds to the carbon–carbon double bond of an unsaturated substrate (a vinyl monomer) to yield a reactive intermediate. This intermediate reacts with a second molecule of monomer to yield a new intermediate, which reacts with a third monomer unit, and so on.
Chain Growth Polymerization - an overview | ScienceDirect Topics
Chain-growth polymerization is a reaction in which the high-molecular-weight polymer is produced early in the polymerization process and the polymer yield (the percentage conversion of the monomer into the polymer) gradually increases with time.
Chain Growth Polymerization - an overview | ScienceDirect Topics
Polymerization in chain growth begins with a reaction between a monomer and a reactive species, which results in the formation of an active site. This chain growth polymerization occurs via four mechanisms: anionic, cationic, free radical, and coordination polymerization.
Chain Growth Polymerization - an overview - ScienceDirect
Chain-growth polymerization is a fundamental technique used to synthesize sulfur-containing polymers by initiating successive addition reactions between sulfur-containing monomers.
Chain-growth Polymerization
Key to this chapter is the mechanistic approach and definition, namely "chain-growth." Sure, most chain-growth polymerizations are also addition polymerizations but that begs the main point: it's the details of the reactions that are important.
Chain-growth Polyaddition - Learn Polymers
The term "chain-growth" refers to how polymer chains are actually formed. With step-growth, all polymers grow slowly more or less at the same time and rate. With chain-growth, polymers are made one chain at a time. That is, whatever's in your reaction vessel is either monomer or high molecular weight polymer.
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