However, at a similar loading, the tensile strengths of
the compounds assume the following order: STR 5L > ENR-
25 > SBR. The highest tensile strength was exhibited by the
STR 5L compounds due to the ability of the natural rubber
chains to undergo strain-induced crystallisation. The
lowest tensile strength was exhibited by the SBR rubber,
which may be attributed to the presence of bulky side
groups that hinder the crosslinking process