Table 7.

Gas barrier properties of SBR vulcanizates.

Vulcanizate	GTR/10−4 mole m−2 s−1 Pa−1	P/mole m−1 s−1 Pa−1
No filler	2.1	2.57
05GnPs + BMPFB	1.5	1.86
1GnPs + BMPFB	1.8	2.21
2GnPs + BMPFB	3.9	4.88
3GnPs + BMPFB	4.0	4.93
4GnPs + BMPFB	3.4	4.25
5GnPs + BMPFB	2.8	3.51
05GnPs/BMPFB	1.7	2.09
1GnPs/BMPFB	1.8	2.21
2GnPs/BMPFB	3.3	2.80
3GnPs/BMPFB	1.5	1.81
4GnPs/BMPFB	1.5	1.87
5GnPs/BMPFB	2.1	2.56

GTR—gas transfer rate, P—gas permeability coefficient (standard deviation of GTR ± 0.30 × 10⁻⁴ mole m⁻² s⁻¹ Pa⁻¹ and P ± 0.31 mole m⁻¹ s⁻¹ Pa⁻¹).