Comparison
PHBV Balanced Grade F vs PEEK
A side-by-side comparison of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate), Balanced Grade F and Polyether Ether Ketone.
Physical
Density
1.22 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.7 %
0.15 %
Transparency
Translucent
Opaque (amber)
Shrinkage
2.5 - 4.8 %
1.1 – 1.4 %
Mechanical
Young's Modulus
1.5 GPa
3.6 GPa
Tensile Strength
45 MPa
100 MPa
Elongation at Break
4.0 %
50 %
Impact Strength (Izod)
0.5 J/cm
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
0-5 °C
143 °C
Melting Point
140-160 °C
343 °C
Continuous Service Temperature
45 °C
260 °C
Heat Deflection Temperature
40 °C
160 °C
Electrical
Dielectric Constant
3.1
3.2
Volume Resistivity
10¹¹ Ω·cm
10¹⁶ Ω·cm
Dielectric Strength
18 kV/mm
—
Chemical resistance
Acids
Good resistance
Excellent
Bases
Good resistance
Excellent
Solvents
Resistant to aliphatic hydrocarbons, but attacked by chlorinated and aromatic hydrocarbons
Excellent
UV Resistance
Moderate
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Biodegradable (compost)
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
Low
~30 kg CO₂e / kg