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

What are factorial experiment studies, Q. What are factorial experiment stu...

Q. What are factorial experiment studies? Factorial experiment studies determine the effect of some independent variables on food quality indices through varying two or more in

Tie line, tie line explain in with the help of phase rule

tie line explain in with the help of phase rule

Nutrition, which type of nutrition does yeast have?

which type of nutrition does yeast have?

Ionic compounds do not have, Ionic compounds do not have: (1) Hard and ...

Ionic compounds do not have: (1) Hard and brittle nature (2) High melting and boiling point (3) Directional properties (4) Soluble in polar solvents Ans:  Direction

Define the methods of shelf life examination, Q. Define the Methods of shel...

Q. Define the Methods of shelf life examination? Methods of shelf life examination are sensory evaluation, chemical analysis and microbiological analysis.

Why does the solution become purple after drops of iodine, 1(a). In these r...

1(a). In these reactions, I2 (in the iodine solution) has what oxidation number? 1(b). The iodine starch reaction that turns purple depends on iodine being in the I- state. Was

Hydrides.., How to write conclusion for this topic hydrides

How to write conclusion for this topic hydrides

Enthalpy change, Question: Does the number of steps in a reaction process a...

Question: Does the number of steps in a reaction process affect the enthalpy change of the overall reaction? Hypothesis: To compare experimental data to functionality of He

Determine stronger acidity of buffer, In order to additional explore the bi...

In order to additional explore the biochemistry of MSG action; we'd require having an aqueous buffer wherein to work. For this question, assume that you require making an 80 mM buf

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