**4. Conclusion**

*3.2.1. Case 1: n = 0.5*

10 Recent Research in Polymerization

*3.2.2. Case 2: n < 0.5*

*3.2.3. Case 3: n > 0.5*

radicals.

Eq. (12);

where, ∑*rt*

as

Means that at any given moment half of the polymer particles contain one radical and are growing while the other half are dormant, and known as zero–one systems to indicate that a

In which radical desorption from particles and termination in the aqueous phase are low

In which particle size is large or the termination rate constant is low while termination in the aqueous phase and the initiation rate is fast, as some polymer particles contain two or more

• Degree of polymerization (Xn) is defined as the rate of growth of a polymer chain divided by the rate at which primary radicals enter the polymer particle and given by the following

This equation neglect any termination by chain transfer, if chain transfer occur the degree of

*ri* ∑*rt*

• Number of polymer particles is dependent on the total surface area of surfactant present in

\_\_ *Ri μ* ) 2/5 (*as*

S is the total concentration of surfactant in the system (micelles, solution, monomer droplets)

The number of polymer particles can be increased by increasing the emulsifier concentration

is the sum of termination reactions by chain transfer.

is the interfacial surface area occupied by a surfactant molecule

<sup>=</sup> *NKp*[*M*] \_\_\_\_\_\_\_ *Ri*

*rp ri*

polymer particle contains either zero or one radical at any given moment [5].

especially for small particle sizes and low initiation rates.

*Xn* <sup>=</sup> \_\_

*Xn* <sup>=</sup> \_\_\_\_ *rp*

polymerization given by Eq. (13).

the system and given by Eq. (14);

*N* = *K* (

μ is the rate of volume increase of polymer particle

while maintaining a constant rate of radical generation.

Emulsion polymerization has wide application on academic and industrial applications. This chapter discuss importance of heterogeneous emulsion polymerization and its constituents; moreover, a comprehensive analysis of the kinetics of emulsion polymerization has been presented. Other emulsion polymerization characteristics like inverse emulsion, mini emulsion and micro emulsion discussed briefly.
