Comparison
PBAT Flexible Film Grade I vs PETG
A side-by-side comparison of Poly(butylene adipate-co-terephthalate), Flexible Film Grade I and Polyethylene Terephthalate Glycol.
Physical
Density
1.20 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.4 %
0.13 %
Transparency
Good
Transparent
Shrinkage
1.0 - 2.5 %
0.2 – 0.5 %
Mechanical
Young's Modulus
0.3 GPa
2.1 GPa
Tensile Strength
30 MPa
50 MPa
Elongation at Break
400-600 %
120 %
Impact Strength (Izod)
3.0 J/cm
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
-50 °C
80 °C
Melting Point
110-120 °C
—
Continuous Service Temperature
40 °C
65 °C
Heat Deflection Temperature
25 °C
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
2.8
3.3
Volume Resistivity
10¹³ Ω·cm
10¹⁴ Ω·cm
Dielectric Strength
16 kV/mm
—
Chemical resistance
Acids
Good resistance
Good
Bases
Good resistance
Fair
Solvents
Resistant to aliphatic hydrocarbons, but swells in chlorinated solvents
—
UV Resistance
Poor
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Biodegradable (compost)
Recyclable
Recycling Code
7 (Other)
1
Carbon Footprint
Lower than petrochemical plastics
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %