Enhancement the Thermal Stability and the Mechanical Properties of Acrylonitrile-Butadiene Copolymer by Grafting Antioxidant

Table 4

The activation energy of NBR vulcanizates containing PBN, NR-graft-o-AP, and control vulcanizate.

Sample	𝑇𝑠	E Kj/mole
A1	434	52.92
A2	441	63.46
A3	445	101.72