Mechanical properties of SEBS film and the hBN/SEBS composite films at different hBN loadings. The average values were obtained from more than 3 samples.

Sample	Young's modulus (MPa)	Strain-at-break (%)	Stress-at-break (MPa)
SEBS	72.8 ± 13.1	12.779 ± 3.067	21.4 ± 2.1
20 wt% hBN/SEBS	88.4 ± 10.1	6.592 ± 0.751	8.1 ± 0.5
40 wt% hBN/SEBS	176 ± 12	0.142 ± 0.017	4.2 ± 0.2
60 wt% hBN/SEBS	313 ± 31	0.026 ± 0.003	3.7 ± 0.2
95 wt% hBN/SEBS	636 ± 81	0.005 ± 0.0005	2.6 ± 0.1