Adsorption of Polymeric Additives Based on Vinyl Acetate Copolymers as Wax Dispersant and Its Relevance to Polymer Crystallization Mechanisms

Table 6

Yield value of untreated and treated crude oil with 5000 ppm concentration of the additives of different composition.

Oil sample	(°C)	Yield value (Dyne/cm^2)
Untreated	12	4.89
	15	3.93
	21	3.52
VASM (1 : 1)	12	1.57
	15	1.36
	21	1.34
VASM (1 : 2)	12	1.83
	15	1.56
	21	1.19
VASM (2 : 1)	12	1.99
	15	1.50
	21	1.30