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

P block elements, why ionisation energy of Al is greater than Ga?

why ionisation energy of Al is greater than Ga?

Atomic Emission Spectroscopy, Hi, I was wondering how monochromators work i...

Hi, I was wondering how monochromators work in atomic emission spectroscopy

Lanthanide chemistry, Why lanthanides shows more than 7 coordination number...

Why lanthanides shows more than 7 coordination number

Indoctomeric effect, Explain indoctomeric effect with example of nitro comp...

Explain indoctomeric effect with example of nitro compound?

Element group 13, What are the basic physical and chemical properties of th...

What are the basic physical and chemical properties of this group

Polyfunctional groups, names of different polyfunctional groups alon g with...

names of different polyfunctional groups alon g with their structures

Acid-base titrations - types of titrations, Acid-base titrations - Types of...

Acid-base titrations - Types of titrations While the strength of an acid is determined along with the help of a standard solution of base, it is termed as acidimetry. Similarly

Chloroform or trichloromethane - organic chemistry, Chloroform or trichloro...

Chloroform or trichloromethane, CHCl 3 It is a significant trihalogen derivative of methane. It was given by Liebig in year 1831 and its name chloroform was proposed by Dumas

Organic chemistry, what type of reaction takes place in synthesis of iodofo...

what type of reaction takes place in synthesis of iodoform from acetone by haloform reaction?

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