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Table 2 Comparison of physical properties of the block copolymer with different kinds of polymers

From: Synthesis of Diblock copolymer poly-3-hydroxybutyrate -block-poly-3-hydroxyhexanoate [PHB-b-PHHx] by a β-oxidation weakened Pseudomonas putida KT2442

PHA Type

Tg (°C)

Tm (°C)

Tc (°C)

Young’s

Modulus

(MPa)

Elongation

At Break

(%)

Tensile Strength

(MPa)

PHB 27

3.1

171.8

41.2

1470 ± 78.0

3.0 ± 0.40

18.0 ± 0.70

PHHx

−28.2

     

Blend PHB/PHHx

(PHHx 42 mol %)

- 8.2, -27.3

173.8

58.6

80.21 ± 5.23

10.14 ± 1.12

4.32 ± 0.45

Block PHB-b-PHHx

(PHHx 42 mol %)

2.7, -16.14

172.1

69.1

7.58 ± 2.70

207.31 ± 15.38

1.42 ± 0.24

Random P(3HB-co-3HHx) (HHx 21 mol %)

−18.1

55.4

 

23.58 ± 4.10

75.29 ± 9.25

1.84 ± 0.36

Styrene butadiene rubber

(SBR) 44,45

−55

  

1.80 ± 0.05

450.0 ± 0.0

2.10 ± 0.05

  1. Tg, glass transition temperature, Tm, melting temperature, Tc, crystallization temperature.