Comparison
Bio-PE Low Density vs PEEK
A side-by-side comparison of Bio-based Polyethylene, Low Density and Polyether Ether Ketone.
Physical
Density
0.918-0.935 g/cm³
1.32 g/cm³
Water Absorption (24h)
< 0.01 %
0.15 %
Transparency
Translucent to opaque
Opaque (amber)
Shrinkage
3.0 - 6.0 %
1.1 – 1.4 %
Mechanical
Young's Modulus
0.15-0.30 GPa
3.6 GPa
Tensile Strength
8-15 MPa
100 MPa
Elongation at Break
500-900 %
50 %
Impact Strength (Izod)
1.5-3.0 J/cm
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
-120 °C
143 °C
Melting Point
105-115 °C
343 °C
Continuous Service Temperature
50 °C
260 °C
Heat Deflection Temperature
30 °C
160 °C
Electrical
Dielectric Constant
2.3
3.2
Volume Resistivity
> 10¹⁵ Ω·cm
10¹⁶ Ω·cm
Dielectric Strength
25 kV/mm
—
Chemical resistance
Acids
Excellent resistance
Excellent
Bases
Excellent resistance
Excellent
Solvents
Resistant to most organic solvents at room temperature
Excellent
UV Resistance
Moderate (requires additive)
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Recyclable (same as fossil-based LDPE)
Recyclable (specialty)
Recycling Code
4 (LDPE)
7
Carbon Footprint
Significantly lower due to renewable source
~30 kg CO₂e / kg