Abbis polymer group department of organic chemistry chalmers university of technology goteborg sweden.
Anionic polymerization of vinyl chloride.
Relationship between polymerization behavior and the nature of lewis acids.
Sklizkova institute of macromolecula compounds u s s r.
B data of talamini et a1 21y22 radical 50 cb radical 0.
Thus in this chapter general aspects of cationic polymerization are discussed followed by a brief overview of early development of living cationic polymerization.
The mechanism of radical polymerization is illustrated below for the polymerization of chloroethene vinyl chloride.
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.
The type of reaction has many manifestations but traditionally vinyl monomers are used.
Of the organometallic compounds tested as initiators only butyllithium was found to initiate polymerization.
Following its generation the initiating free radical adds nonradical monomer units thereby growing the polymer chain.
Arihiro kanazawa shokyoku kanaoka and sadahito aoshima.
Copolymerization initiated by n butyllithium.
Bulletin of the chemical society of japan 1962 35 3 395 399.
Polymerization of vinyl chloride with butyllithium and its complexes v.
Free radical polymerization frp is a method of polymerization by which a polymer forms by the successive addition of free radical building blocks.
Anionic polymerization of vinylidene chloride.
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.
Often anionic polymerization involves living polymerizations which allows control of structure and composition.
Free radicals can be formed by a number of different mechanisms usually involving separate initiator molecules.
Anionic polymerization of vinyl chloride has been studied.
Anionic polymerization of vinylidene chloride.
Polymerization in bulk at 0 c.
That is small molecules containing carbon carbon double bonds.
Q as is typical for initiating radical reactions an initiator usually a peroxide is employed.
Q the repeat structure of the final polymer is written as.
Cationic polymerization of polar monomers such as vinyl ethers and styrene derivatives played a critical role in accomplishing ideal living cationic polymerization of vinyl type monomers.
Living cationic polymerization of vinyl ether with methanol metal chloride initiating systems.
Macromolecules 2010 43 6 2739 2747.
