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

Solutions, how to determine the percentage of association or dissociation i...

how to determine the percentage of association or dissociation in a solution?

Polarography, what is the definition of migration current?

what is the definition of migration current?

Write equation using lewis structures, One way to create ethanol for use as...

One way to create ethanol for use as a gasoline additive is the reaction of water vapor with ethylene: a. write this equation using Lewis structures. b. Is this reaction e

Illustrate born-haber cycle, Q. Illustrate Born-Haber cycle? Boron is a...

Q. Illustrate Born-Haber cycle? Boron is always covalent and does not   form,B 3+ ions, because' the energy required to remove three electrons is very high.  Many simple compo

Compounds containing nitrogen, which compounds will dissolve in alkaline so...

which compounds will dissolve in alkaline solution after it has undergone reaction with hinsberg reagent

.basic concepts of chemistry, calculate M of 3m solution of NaCl of densit...

calculate M of 3m solution of NaCl of density of 1.05 gm/ml

Calculate the temperature of that superheated steam, It is desired to creat...

It is desired to create 5 kg of superheated steam at 300 o C and 20 bar using an isobaric mixer. If 543 kJ of heat are sent to the system, and 2 kg of saturated steam is mixed wit

Explain the shelf life, Normal 0 false false false EN-U...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

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