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

Heat Transfer Problems, 200 g of water at 30 degrees C is mixed with 20 g o...

200 g of water at 30 degrees C is mixed with 20 g of silver at 350 degrees C, what''s the final temp?

Enzymatic action is highly specific, Why can it be said that the enzymatic ...

Why can it be said that the enzymatic action is highly specific? Ans) The enzymatic action is highly particular because only particular substrates of one enzyme bind to the acti

What is bond order?, Bond order is the number of chemical bonds between a p...

Bond order is the number of chemical bonds between a pair of atoms. For example, in diatomic nitrogen N≡N the bond order is 3, while in acetylene H-C≡C-H the bond order between the

Evaporation, why does evaporation causes cooling

why does evaporation causes cooling

Law of inverse proportion., I want to know about law of inverse proportion ...

I want to know about law of inverse proportion clearly.

Explain distillation in purification of metals, Q. Explain Distillation in ...

Q. Explain Distillation in purification of metals? Metals with low boiling points, such as cadmium, zinc and mercury will be purified by distillation. The distillation is gener

Organic, formula of acetic acid

formula of acetic acid

Benzyl amine in the presence of a weak acidic catalyst, Upon  treatment of ...

Upon  treatment of A with benzyl amine in the presence of a weak acidic catalyst, they obtained mainly the undesired amino alcohol C along with some of the desired product D that c

What are magnetic properties and magnetic moment?, The transition metal com...

The transition metal complexes are known to be paramagnetic in character. CFT helps us to understand the magnetic properties in terms of magnetic susceptibility measurements. The m

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