Table 2 Values of the depolymerisation rate constants of model samples at the maximum time of light, thermal and thermal aging with NO ₂

W

0.89 ± 0.10

2.25 ± 0.26

2.45 ± 0.23

B

1.25 ± 0.33

1.87 ± 0.31

2.89 ± 0.58

S

0.72 ± 0.19

0.81 ± 0.28

0.88 ± 0.26

IGI 11

3.09 ± 0.77

1080  ±  250

1550  ±  280

IGI 12

2.24 ± 0.53

490  ±  109

860  ±  150