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

Chemical bonding, When NaCl is dissolved in water, the sodium ion become

When NaCl is dissolved in water, the sodium ion become

The valency of sulphur in sulphuric acid, The valency of sulphur in sulphur...

The valency of sulphur in sulphuric acid is: (1) 2   (2) 4    (3) 6                               (4) 8 Ans:  6

Atoms and molecules, which postulate of daltons theory can explain the law ...

which postulate of daltons theory can explain the law of definite proportions

General Chemistry- College, Determine the molality of an aqueous solution t...

Determine the molality of an aqueous solution that is 12.0 percent urea by mass

Radiometric titration, instrumentation and applications of radiometric titr...

instrumentation and applications of radiometric titration

Structure of metal carbonyls, explain the bonding and structure in transiti...

explain the bonding and structure in transition metal carbonyls

Explain carbocation, Explain Carbocation The mechanism is a sequence of...

Explain Carbocation The mechanism is a sequence of two Brønsted acid-base reactions. In the first (step a), the double bond is protonated to give a tertiary carbocation; in the

Explain carbocation intermediate, Explain carbocation intermediate When...

Explain carbocation intermediate When 3-methyl-1-butene undergoes acid-catalyzed hydration, rearrangement happens because carbocation intermediates are included. (See the solut

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