Table 3 Values of frequency exponent (s) and the barrier height (WM) for all composites under investigation at different γ-irradiation doses.

From: Insights into γ-irradiation effect on hole structure and conductivity of doped ethylene–propylene–diene rubber with different wheat husk fibers lengths

Samples (kGy)

SW30

EW30

HW30

s

WM (eV)

s

WM (eV)

s

WM (eV)

0

0.86

1.10

0.83

0.91

0.80

0.78

50

0.85

1.04

0.84

0.92

0.88

1.22

100

0.82

0.86

0.83

0.91

0.82

0.86

150

0.85

1.04

0.84

0.92

0.84

0.92

200

0.83

0.91

0.83

0.91

0.87

1.13

300

0.82

0.86

0.81

0.82

0.82

0.86

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