Anionic Polymerization Of Vinyl Chloride

Macromolecules 2010 43 6 2739 2747.

Anionic polymerization of vinyl chloride.

They make up largest family of polymers. The mechanism of radical polymerization is illustrated below for the polymerization of chloroethene vinyl chloride. Free radicals can be formed by a number of different mechanisms usually involving separate initiator molecules. Often anionic polymerization involves living polymerizations which allows control of structure and composition.

Anionic polymerization of vinylidene chloride. Anionic addition polymerization is a form of chain growth polymerization or addition polymerization that involves the polymerization of monomers initiated with anions. Relationship between polymerization behavior and the nature of lewis acids. Let s see how we get from a vinyl monomer to a vinyl polymer using for an example the simplest vinyl polymer polyethylene polyethylene is made from the monomer ethylene which is also called ethene when polymerized the ethylene molecules are joined along the axes of their.

Bulletin of the chemical society of japan 1962 35 3 395 399. Living cationic polymerization of vinyl ether with methanol metal chloride initiating systems. Q as is typical for initiating radical reactions an initiator usually a peroxide is employed. Anionic polymerization of vinyl chloride table iv chain branching in pvc prepared by anionic and radical polymerization sample mn chj1000 c atoms 2a 3a 4a a chain branching of these samples determined by dr.

Q the repeat structure of the final polymer is written as. Abbis polymer group department of organic chemistry chalmers university of technology goteborg sweden. B data of talamini et a1 21y22 radical 50 cb radical 0. Free radical polymerization frp is a method of polymerization by which a polymer forms by the successive addition of free radical building blocks.

Following its generation the initiating free radical adds nonradical monomer units thereby growing the polymer chain. Academy of sciences received 10 january 1967 in the anionic polymerization of vinyl chloride vc especially with lithium alkyls ill the termination step is a major factor and this leads to rapid slowing dowel of the. Arihiro kanazawa shokyoku kanaoka and sadahito aoshima. Sklizkova institute of macromolecula compounds u s s r.

Copolymerization initiated by n butyllithium. Anionic polymerization of vinylidene chloride. Polymerization in bulk at 0 c. Of the organometallic compounds tested as initiators only butyllithium was found to initiate polymerization.

Polymerization of vinyl chloride with butyllithium and its complexes v. Anionic polymerization of vinyl chloride has been studied. That is small molecules containing carbon carbon double bonds.