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