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

Coordination number and geometry, Coordination number and geometry   ...

Coordination number and geometry   Binary compounds are ones with two different elements present. 'Simple' crystal structures can be classed as ones in which each atom (or

The quantum number which may be designated, The quantum number which may be...

The quantum number which may be designated by s, p, d,   and f instead of number is: (1)  n                      (2)  l               (3) m 1

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

Periodic table p&s block, which are the most imporrtant compounds formed in...

which are the most imporrtant compounds formed in p &s blocccccck

why do soaps not work under hard water , The Ca 2+ and Mg 2+ ions in har...

The Ca 2+ and Mg 2+ ions in hard water form scum with soap. Therefore they don''t form lather and therefore don''t clean the dirt.

Solubility - physical charterstics of monocarboxylic acids, Solubility - Ph...

Solubility - Physical charterstics of monocarboxylic acids       The lower most members of the aliphatic carboxylic acid family (upto C 4 ) are extensively soluble in water.

Periodic table and periodicity of properties, alkali metals belong to s-blo...

alkali metals belong to s-block in the periodic table.why?

Dihydric alcohols - hydrocarbon, Dihydric alcohols - Hydrocarbon These ...

Dihydric alcohols - Hydrocarbon These are compound consisting of two hydroxyl sets. These are dihydroxy components of alkanes. Their common formula is A n H 2n+2 O 2 . The very

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