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Table 1 Tensile properties of neat HDPE and HA/HDPE nano-composites

From: Effect of gamma radiation and accelerated aging on the mechanical and thermal behavior of HDPE/HA nano-composites for bone tissue regeneration

Material

Non aged specimens

Aged specimens

Dose (kGy)

Modulus (MPa)

Ultimate stress (MPa)

Fracture strain

Modulus (MPa)

Ultimate stress (MPa)

Fracture strain

HDPE +0 % HA

0

820 ± 36

20.5 ± 0.8

76 ± 5.8

650 ± 38

18.3 ± 0.8

60 ± 4.9

35

1060 ± 59

22 ± 1

48 ± 3.8

915 ± 55

22 ± 0.9

35 ± 3.1

70

1190 ± 88

22.6 ± 0.9

26 ± 2.1

1059 ± 52

21.5 ± 1

22 ± 1.8

HDPE + 10 % HA

0

1006 ± 58

25 ± 1.4

16.4 ± 1.1

740 ± 54

21 ± 1.1

13.3 ± 1.01

35

1188 ± 79

24.6 ± 1.1

13 ± 0.92

1030 ± 60

23.9 ± 0.98

11 ± 0.87

70

1310 ± 90

25.4 ± 0.95

10 ± 0.53

1200 ± 57

23.9 ± 1.1

9 ± 0.69

HDPE + 20 % HA

0

1185 ± 67

27.5 ± 1.3

10.5 ± 0.58

910 ± 60

25.4 ± 1.6

9.3 ± 0.64

35

1295 ± 70

28.1 ± 1.2

9 ± 0.72

1160 ± 63

26.9 ± 1.5

7 ± 0.48

70

1430 ± 88

29 ± 1.7

8 ± 0.53

1350 ± 80

27 ± 1.2

7 ± 0.41

HDPE + 30 % HA

0

1310 ± 81

28.8 ± 1.9

8.5 ± 0.41

1030 ± 69

26.3 ± 1.5

8.1 ± 0.58

35

1480 ± 87

28.9 ± 1.5

7 ± 0.45

1250 ± 78

28 ± 1.6

6 ± 0.42

70

1496 ± 89

29.1 ± 1.5

6 ± 0.39

1380 ± 81

27.5 ± 1.3

5 ± 0.33