Comparison

Bio-PE Low Density vs PETG

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

Physical

Density
0.918-0.935 g/cm³
1.27 g/cm³
Water Absorption (24h)
< 0.01 %
0.13 %
Transparency
Translucent to opaque
Transparent
Shrinkage
3.0 - 6.0 %
0.2 – 0.5 %

Mechanical

Young's Modulus
0.15-0.30 GPa
2.1 GPa
Tensile Strength
8-15 MPa
50 MPa
Elongation at Break
500-900 %
120 %
Impact Strength (Izod)
1.5-3.0 J/cm
100 J/m
Flexural Strength
70 MPa

Thermal

Glass Transition Temperature
-120 °C
80 °C
Melting Point
105-115 °C
Continuous Service Temperature
50 °C
65 °C
Heat Deflection Temperature
30 °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 LDPE)
Recyclable
Recycling Code
4 (LDPE)
1
Carbon Footprint
Significantly lower due to renewable source
~2.7 kg CO₂e / kg
Bio-based Content
0 %