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Table 2 Physical properties of the methanotroph produced PHA polymers

From: Expanding the range of polyhydroxyalkanoates synthesized by methanotrophic bacteria through the utilization of omega-hydroxyalkanoate co-substrates

PHA products Molecular weights Thermal properties Mechanical properties
Mn Mw/Mn Tm (°C) ΔHm (J/g) Tg (°C) E (GPa) σt (MPa) εb (%)
P3HB 1.48 E+06 1.82 178 83 3 3.0 43.2 5.2
P(3HB-co-24 mol% 3HV) 1.32 E+06 2.24 147 45 −1 1.0 22.0 50.5
P(3HB-co-3.0 mol% 4HB) 1.33 E+06 2.12 148 65 −2 1.2 35.6 176
P(3HB-co-9.5 mol% 4HB) 1.22 E+06 2.01 135 47 −5 0.8 31.2 284
P(3HB-co-3.6 mol% 5HV-co-1.4 mol% 3HV) 1.26 E+06 2.17 144 44 −2 0.8 29.9 106
P(3HB-co-1.4 mol% 6HHx-co-1.0 mol% 4HB) 1.27 E+06 2.11 150 40 −1 0.7 27.6 134
Commercial P3HB 7.38 E+05 2.02       
Commercial PHBV 4.48 E+05 2.18       
  1. M n number average molecular weight, M w weight average molecular weight, T m melting temperature, ΔH m apparent heat of fusion, T g glass transition temperature, E Young’s modulus, σ t tensile strength, ε b elongation at break