Table 3. Apparent Crosslink Densities of the Samples (1/Q). Values in the Parentheses are the Expected Values

Compound	Blend ratio
	80/20	60/40	40/60	20/80
Single rubber	SBR1	SBR2	SBR3	SBR4
	0.546	0.662	0.443	0.462
A-series (SBR1/SBR2)
SBR1/SBR2	0.548(0.569)	0.565(0.592)	0.594(0.616)	0.650(0.639)
B-series (SBR2/SBR3)
SBR2/SBR3	0.611(0.618)	0.561(0.574)	0.519(0.531)	0.475(0.487)
C-series (SBR3/SBR4)
SBR3/SBR4	0.457(0.447)	0.456(0.451)	0.462(0.454)	0.462(0.458)