Addition polymerization, Chemistry

Assignment Help:

Addition polymerization: It involves following three mechanisms:

1.                 Free radical polymerization

2.                 Ionic polymerization mechanism

3.                 Coordination polymerization mechanism

Free-radical polymerization: It involves following steps:

Initial step

1.                 Production of free radicals by the decomposition of compounds called initiators

R-R = 2R

Initiator free radicals

The decomposition of the initiator is splitting into two identical fragments called homiletic decomposition, where each fragment carrier's one unpaired electron with it called free radical.

Chain propagation step: The free radical (R) produced in the chain initiation step adds to an alkenes to form a new free radical, which then reacts with additional monomers in a chain reaction:

R + H2C = RCH2CH2

RCH2CH2 +CH2 = RCH2CH2 :CH2


Related Discussions:- Addition polymerization

Chemical kinetics of the peroxodisulfate ion, Chemical Kinetics of the Pero...

Chemical Kinetics of the Peroxodisulfate Ion The peroxodisulfate  ion is one of the strongest oxidants that are  called, although the oxidation reaction is relatively slow.

Electrolytic reduction of magnesium chloride, Electrolytic reduction of mag...

Electrolytic reduction of magnesium chloride Iron cell 2. Magnesium 3. Graphite anode 4. Porcelain hood 5. Iron cathode 6. Coal gas 7. Chlorine 8. Coal gas 9. Molten ele

Functional isomerism - organic chemistry, Functional isomerism: This k...

Functional isomerism: This kind of isomerism is because of difference in the nature of functional group present in the isomers. The given pairs of elements all time form funct

Chain, Chain, nuclear or skeleton isomerism: This form of isomerism ar...

Chain, nuclear or skeleton isomerism: This form of isomerism arises because of the difference in the nature of the carbon chain (that is straight or branched) which makes the

Pure ammonia gas is injected , Ammonia is a gas for which reliable analytic...

Ammonia is a gas for which reliable analytical methods are available to explain concentration in other gases.  To measure ?ow in a 15 inch schedule 40 natural gas pipeline, pure am

The number of electrons in, The number of electrons in [ 40 19 k ] -1   i...

The number of electrons in [ 40 19 k ] -1   is: (1) 19      (2) 20      (3)18     (4)40 Ans: 40

Salt, . Types of salt and what happens when expose to the atmosphere

. Types of salt and what happens when expose to the atmosphere

What is calcinations process, Q. What is Calcinations process? This is ...

Q. What is Calcinations process? This is fie method of heating the concentrated ore in a limited supply of air to a high temperature but under the fusion temperature. In calcin

Semi micro analysis, on what basis basic radicals are separated into six gr...

on what basis basic radicals are separated into six groups ?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd