Table 1 Overview of the mechanical properties.

Composition	Young’s modulus	Tensile strength	Strain at break	Toughness
	(GPa)^a	(MPa)^a	(%)^a	(kJ m^–3)^a
TAB:Zn	1.11 ± 0.07	4.5 ± 0.3	0.41 ± 0.02	7.0 ± 0.9
TAB/BKB:Zn (90/10)	1.12 ± 0.04	7.5 ± 1.1	0.71 ± 0.13	27 ± 5
TAB/BKB:Zn (80/20)	0.92 ± 0.02	10.1 ± 0.3	1.2 ± 0.05	68 ± 4
TAB/BKB:Zn (70/30)	0.76 ± 0.03	11.0 ± 0.3	1.6 ± 0.03	92 ± 3
TAB/BKB:Zn (60/40)	0.44 ± 0.05	15.7 ± 0.4	5.6 ± 0.5	572 ± 93
TAB/BKB:Zn (50/50)	0.28 ± 0.04	10.9 ± 0.5	10.7 ± 1.1	935 ± 92
TAB/BKB:Zn (40/60)	0.18 ± 0.01	9.0 ± 0.3	42 ± 3	3060 ± 350
TAB/BKB:Zn (30/70)	0.087 ± 0.002	6.2 ± 0.1	58 ± 0.4	2919 ± 9
TAB/BKB:Zn (20/80)	0.063 ± 0.010	5.0 ± 0.1	125 ± 4	5585 ± 119
TAB/BKB:Zn (10/90)	0.040 ± 0.006	3.5 ± 0.1	238 ± 24	7887 ± 980
BKB:Zn	0.036 ± 0.001	3.9 ± 0.1	116 ± 6	3580 ± 300

^aData represent averages of n = 3–7 individual measurements ± standard deviation. Measured by stress–strain experiments at 25 °C with a strain rate of 1% min⁻¹.
Mechanical properties as determined by uniaxial tensile tests with the MSPs TAB:Zn and BKB:Zn and the copolymers TAB/BKB:Zn with the indicated TAB/BKB weight ratio (wt/wt%).

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