Comparison

Bio-PE High Density vs PETG

A side-by-side comparison of Bio-based Polyethylene, High Density and Polyethylene Terephthalate Glycol.

Physical

Density
0.941-0.965 g/cm³
1.27 g/cm³
Water Absorption (24h)
< 0.01 %
0.13 %
Transparency
Opaque
Transparent
Shrinkage
2.0 - 5.0 %
0.2 – 0.5 %

Mechanical

Young's Modulus
0.8-1.5 GPa
2.1 GPa
Tensile Strength
18-30 MPa
50 MPa
Elongation at Break
500-800 %
120 %
Impact Strength (Izod)
2.0-5.0 J/cm
100 J/m
Flexural Strength
70 MPa

Thermal

Glass Transition Temperature
-120 °C
80 °C
Melting Point
120-135 °C
Continuous Service Temperature
70 °C
65 °C
Heat Deflection Temperature
40 °C
70 °C
CTE
68 × 10⁻⁶ /K

Electrical

Dielectric Constant
2.3
3.3
Volume Resistivity
> 10¹⁵ Ω·cm
10¹⁴ Ω·cm
Dielectric Strength
25 kV/mm

Chemical resistance

Acids
Excellent resistance
Good
Bases
Excellent resistance
Fair
Solvents
Resistant to most organic solvents at room temperature
UV Resistance
Moderate (requires additive)
Fair
Alcohols
Good
Oils
Good

Sustainability

Recyclability
Recyclable (same as fossil-based HDPE)
Recyclable
Recycling Code
2 (HDPE)
1
Carbon Footprint
Significantly lower due to renewable source
~2.7 kg CO₂e / kg
Bio-based Content
0 %