Comparison
PBAT High Heat vs PEEK
A side-by-side comparison of Poly(butylene adipate-co-terephthalate), High Heat Grade BB and Polyether Ether Ketone.
Physical
Density
1.21 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.45 %
0.15 %
Transparency
Good
Opaque (amber)
Shrinkage
1.2 - 2.8 %
1.1 – 1.4 %
Mechanical
Young's Modulus
0.35 GPa
3.6 GPa
Tensile Strength
32 MPa
100 MPa
Elongation at Break
350-550 %
50 %
Impact Strength (Izod)
2.8 J/cm
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
-45 °C
143 °C
Melting Point
118-128 °C
343 °C
Continuous Service Temperature
50 °C
260 °C
Heat Deflection Temperature
35 °C
160 °C
Electrical
Dielectric Constant
2.9
3.2
Volume Resistivity
10¹³ Ω·cm
10¹⁶ Ω·cm
Dielectric Strength
17 kV/mm
—
Chemical resistance
Acids
Good resistance
Excellent
Bases
Good resistance
Excellent
Solvents
Resistant to aliphatic hydrocarbons, but swells in chlorinated solvents
Excellent
UV Resistance
Poor
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Biodegradable (compost)
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
Lower than fossil-based plastics
~30 kg CO₂e / kg