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

Eudiometry, #question50 ml of a mixture of NH3 and H2 was completely decomp...

#question50 ml of a mixture of NH3 and H2 was completely decomposed by sparking into nitrogen and hydrogen. 40 ml of Oxygen was then added and the mixture was sparked again. After

In a bohr''s model of atom when an electron, In a Bohr's model of atom when...

In a Bohr's model of atom when an electron jumps from n= 1  to n= 3  , how much energy will be emitted or absorbed: (1)  2.15 x10 -11 erg                          (2) 0.19

Electronic configuration of c is, Electronic configuration of C  is: (...

Electronic configuration of C  is: (1) 1s 2 , 2s 2 , 2p 2 ,                               (2) 1s 2 , 2s 2 , 2p 3 (3) 1s 2 , 2s 2 ,            (4) 1s 2 , 2s 2 , 2p 6

classification of polymers - semi synthetic polymers, Semi-synthetic polym...

Semi-synthetic polymers Rayon and other cellulose derivatives such as cellulose nitrate, cellulose acetate so on, are semi-synthetic polymers. These illustrated as thermoplasti

The principal quantum number represents, The principal quantum number repre...

The principal quantum number represents : (1) Shape of an orbital (2) Distance of electron from nucleus (3) Number of electrons in an orbit (4) Number of orbitals in an

Student, formula of chromium (III) and acetate

formula of chromium (III) and acetate

Entropy generation for the process, Two kg Ammonia (mA) at  P A = 300  kPa...

Two kg Ammonia (mA) at  P A = 300  kPa and T A = -10ºC and 1 kg Ammonia (m B ) at P B = 300 kPa and T B = 100ºC  are mixed in a constant pressure and adiabatic process. Find th

What is the electrometallurgy, Q. What is the Electrometallurgy? The ab...

Q. What is the Electrometallurgy? The above two metallurgical processes, namely pyrometallurgy and hydrometallurgy can be used in the extraction of a fairly large number of met

Saturation of magnesium nitrate, How can I figure out when a solution of ma...

How can I figure out when a solution of magnesium nitrate will be saturated in terms of its conductivity at room temperature?

Addition and Substitution of bromine to Toluene, Bromination of Toluene in ...

Bromination of Toluene in presence of light or heat gives benzyl chloride, but chlorination of benzene in presence of light gives benzene hexachloride. Why?

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