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

Show the uses of emulsions, Q. Show the Uses of Emulsions? Emulsions pr...

Q. Show the Uses of Emulsions? Emulsions provide many useful functions in food preparation and processing. They: 1) act as vehicles for flavour to foods, 2) dilute ingr

Bio, reaction of ammonium molybdate with phosphate power point

reaction of ammonium molybdate with phosphate power point

Explain the oxidation product of the respiratory chain, Explain the oxidati...

Explain the oxidation product of the respiratory chain? How is the free energy kept at the inner mitochondrial membrane independently of chemical bonds, and how is it used for

Hardness, 1. A sample of water contains: suspended matter = 100 mg; Ca(NO3)...

1. A sample of water contains: suspended matter = 100 mg; Ca(NO3)2 = 16.4 mg/L; MgSO4 = 24 mg/L; MgCl2 = 19 mg/L; NaOH = 40 mg/L and KOH = 56 mg/L. Calculate temporary, permanent a

Effect of concentration, Q. Show the Effect of concentration on Chemical Eq...

Q. Show the Effect of concentration on Chemical Equilibrium? Ans. When more of one of the chemicals is added to the reaction, more collisions take place moving the reactio

Aufbau principle, Which of the following sequence is correct as per Aufbau ...

Which of the following sequence is correct as per Aufbau principle: (1) 3s (2)  1s (3) 2s (4) 2s Ans: 1s

Packing of atoms, how can i make an assignment on this topic

how can i make an assignment on this topic

Microwave digestion, if insoluble residues are found after the microwave di...

if insoluble residues are found after the microwave digestion with nitric acid, how to improve?

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