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

Practical, How I write chm practice khata

How I write chm practice khata

S block elements, write summarized report on s block elements characteristi...

write summarized report on s block elements characteristics and properties

Determine the electronic configurations, Aufbau principle is obeyed in whic...

Aufbau principle is obeyed in which of the following electronic configurations: (1) 1s 2 2s 2 2p 6                    (2)  1s 2 3p 6 3s 2      (3)  1s 2 3s 2 3p 6

Mechanism.., give the mechanism of additin of HCN to acetaldehyde?????

give the mechanism of additin of HCN to acetaldehyde?????

Salt analysis, SIr Plzz do guide me that why only 7 groups of transition el...

SIr Plzz do guide me that why only 7 groups of transition element are used for salt analysis ? Others are not used for salt analysis...mean other tranistion elements?

Define geometrical isomerism, Isomers, which vary in the orientation of gro...

Isomers, which vary in the orientation of groups around the double bounded carbon atoms, are known as geometrical Isomers. It is also known as Cis-Trans Isomerism.

Photochemistry, How to prepare my seminar paper ?

How to prepare my seminar paper ?

Atoms or group of atoms which are electrically, Atoms or group of atoms whi...

Atoms or group of atoms which are electrically charged are known: (1) Anions                                           (2) Cations       (3) Ions (4) Atoms Ans:

Identify equation to describe chemical process, Identify an equation that d...

Identify an equation that describes some chemical process.  Your equation should have at least two parameters, at least one of which should contribute in a non-linear way. Here

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