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Vinyl chloride polymerization in microdroplet reactor - Les thèses en ...

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List of symbols<br />

LIST OF SYMBOLS<br />

Lat<strong>in</strong> letters<br />

A - Frequ<strong>en</strong>cy factor<br />

Bo - Bond number<br />

Ca - Capillary number<br />

D m Specific l<strong>en</strong>gth scale<br />

D km.m 3 D<strong>en</strong>sity<br />

De - Dean number<br />

D x m 2 .s -1 Self-diffusion coeffici<strong>en</strong>t of specie y<br />

D x,0 m 2 .s -1 Pre-expon<strong>en</strong>tial factor<br />

∆E kJ mole -1 Appar<strong>en</strong>t activation <strong>en</strong>ergy<br />

f - Darcy coeffici<strong>en</strong>t<br />

f g - Droplet g<strong>en</strong>eration frequ<strong>en</strong>cy<br />

f I - Initiator effici<strong>en</strong>cy<br />

G<br />

f<br />

H , x<br />

- Fractional hole free volume of pure compon<strong>en</strong>t at T g<br />

g m.s -2 Gravitational acceleration<br />

∆H p kJ.mol -1 Polymerization heat<br />

[I] mole.L -1 Initiator conc<strong>en</strong>tration<br />

J<br />

Parameter def<strong>in</strong>ed <strong>in</strong> the model<br />

k - Constant from Weisbach equation<br />

k L mol -1 s -1 Effective rate constant<br />

K - Solubility constant<br />

K* - Precipitation parameter<br />

K’ de s -1 Radical desorption rate constant<br />

K app m 2 .s -1 Appar<strong>en</strong>t reaction rate constant<br />

K chem m 2 .s -1 Intr<strong>in</strong>sic reaction rate constant<br />

K d s -1 Initiator decomposition rate constant<br />

K diff m 2 .s -1 Diffusion contribution to the rate constant<br />

K f L.mole -1 s -1 Cha<strong>in</strong> transfer rate constant<br />

K I - Initiator partition coeffici<strong>en</strong>t<br />

K p L.mole -1 s -1 Propagation rate constant<br />

K t m 3 .kmole -1 m<strong>in</strong> -1 Term<strong>in</strong>ation rate constant<br />

L m Specific l<strong>en</strong>gth<br />

5

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