Chain transfer reactions are usually categorized by the nature of the molecule that reacts with the growing chain. Transfer to chain transfer agent. Chain transfer agents have at least one weak chemical bond, which therefore facilitates the chain transfer reaction. Common chain transfer agents include thiols, especially … See more Chain transfer is a polymerization reaction by which the activity of a growing polymer chain is transferred to another molecule. P• + XR' → PX + R'• Chain transfer reactions reduce the average See more 1. ^ IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version: (2006–) "chain transfer". doi: 2. ^ Flory, P. J. Principles of … See more Chain transfer was first proposed by Taylor and Jones in 1930. They were studying the production of polyethylene [(C 2H 4)n] from See more The nature of chain transfer reactions is currently well understood and is given in standard polymerization textbooks. Since the 1980s, however, a particularly active area of research has been in the various forms of free radical living polymerizations including See more WebSep 12, 2024 · KP3. Kinetics of Chain Polymerization. The polymerization of alkenes occurs in a very different way than monomers that undergo condensation reactions. Whether it …
Chain Transfer - an overview ScienceDirect Topics
WebFeb 5, 2024 · Saturated chain ends, instead, usually derive from chain transfer to a main group metal cocatalyst (e.g., Al and Zn alkyls) [31,32] or reaction with molecular hydrogen [33,34]; additionally, they can derive from chain reinitiation via monomer insertion into metal-hydride and metal-alkyl species, generated after BHE/hydrogenolysis and … WebThere are several types of chain transfer reactions; three very common reactions are: Proton transfer to monomer: a β-proton is transfered to a monomer, which becomes the … buffet menu at charlestown races and slots
2.4: Cationic Polymerization - Chemistry LibreTexts
WebReversible addition−fragmentation chain-transfer or RAFT polymerization is one of several kinds of reversible-deactivation radical polymerization. ... RAFT allows chain extension of a polymer of one monomer with a … WebSep 12, 2024 · Once the first monomer has been initiated into a radical, it can react with another monomer to enchain it and make a new radical. This is the principal propagation step of the chain reaction. That step will keep repeating, adding … WebJan 1, 2013 · The cationic polymerization is a chain polymerization that involves three steps: (1) initiation, (2) propagation, and (3) termination. The feasibility of polymerization depends on the ease of cation formation from monomer. The reaction can occur with the addition of the electrophile (carbocation) to monomer and form more stable intermediate. buffet megaue mooca