The dumb-bell shaped specimens of the TPVs used for testing
were die-cut from the compression molded sheet and the testing
was done after 24 h of maturation at room temperature. Tensile
strength was done according to ASTM D418-98A using a universal
testing machine Hounsfield H10KS at a constant cross-head speed
of 500 mm/min. Tear strength was determined according to ASTM
D-624-81 test method using unnicked 90 angle test piece. Crosshead
speed was maintained the same as that of the tensile test.
Tension set experiment was performed at room temperature with
a stretching condition for 10 min at 100% elongation as per ASTM
D412-98 method. The average value of three tests for each sample
is reported here.