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

Water soluble vitamins permits water solubility, What property command to w...

What property command to water soluble vitamins permits water solubility Ans) Because of 1]OH bond between them 2] polar componets 3] Availibility of in nature

What are backwashing and disinfection, Water treatment system among other p...

Water treatment system among other process will contain the following and you are required to design only one of them and demonstrate strong understanding of the principles involv

Show the extraction of oxygen, Q. Show the Extraction of Oxygen? Oxygen...

Q. Show the Extraction of Oxygen? Oxygen is separated from air on a large scale by the fractional distillation of liquid air. It is obtained as a by-product along with hydrogen

Composition of hydrocarbon, Composition of hydrocarbon (i) Alkanes: fou...

Composition of hydrocarbon (i) Alkanes: found 30 to 70% consist of upto 40 carbon molecule. Alkanes are mainly linear chain but some are branched chain isomers. (ii) Cycloal

Tranquillizer or hypnotics - drugs and medicines, Tranquillizer or Hypnotic...

Tranquillizer or Hypnotics: The chemical substances employed for the treatment of stress, mild and harsh mental diseases are called tranquillizers. These are employed to relea

Ions in aqueous solution, IONS IN AQUEOUS SOLUTION Ionic models : ...

IONS IN AQUEOUS SOLUTION Ionic models : Ions are charged chemical substance. Positively charged ions are called cations as they travel to the cathode of an electrolytic c

Azeotropic distillation - purification of organic compounds, Azeotropic Dis...

Azeotropic Distillation - Purification of organic compounds Azeotropic mixture is a mixture comprising constant boiling point. The most well known instance is a mixture of

SOLID STATE, HOW UNIT CELL AND SPACE LATTICE ARE RELATED TO EACH OTHER?

HOW UNIT CELL AND SPACE LATTICE ARE RELATED TO EACH OTHER?

Molar conductivity, what is molar conductivity at infinite dilution

what is molar conductivity at infinite dilution

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