Influence of Filler from a Renewable Resource and Silane Coupling Agent on the Properties of Epoxidized Natural Rubber Vulcanizates

Table 6

Crosslink densities of gum and filled ENR-25 vulcanizates with various RHA contents and 30 phr of silica with and without silane coupling agent (Si69).

Sample	Crosslink density (mol/m^3)
Gum	83.36 ± 1.41
RH	92.33 ± 2.74
RH	100.27 ± 3.72
RH	129.87 ± 1.95
RH-Si69	100.92 ± 5.73
RH-Si69	136.01 ± 3.16
RH-Si69	168.45 ± 2.88
	176.37 ± 3.50
-Si69	282.25 ± 2.80