Comparison
PEF Barrier Bottle vs PEEK
A side-by-side comparison of Polyethylene Furanoate, Barrier Bottle Grade R and Polyether Ether Ketone.
Physical
Density
1.35-1.40 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.2 %
0.15 %
Transparency
Excellent
Opaque (amber)
Shrinkage
1.0 - 2.0 %
1.1 – 1.4 %
Mechanical
Young's Modulus
4.0-4.5 GPa
3.6 GPa
Tensile Strength
65-85 MPa
100 MPa
Elongation at Break
6-12 %
50 %
Impact Strength (Izod)
0.3-0.4 J/cm
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
85-95 °C
143 °C
Melting Point
210-220 °C
343 °C
Continuous Service Temperature
80 °C
260 °C
Heat Deflection Temperature
75 °C
160 °C
Electrical
Dielectric Constant
3.4
3.2
Volume Resistivity
10¹³ Ω·cm
10¹⁶ Ω·cm
Dielectric Strength
22 kV/mm
—
Chemical resistance
Acids
Good resistance
Excellent
Bases
Poor resistance
Excellent
Solvents
Resistant to oils and greases, but can be affected by strong bases
Excellent
UV Resistance
Moderate
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Potentially recyclable (requires separate stream)
Recyclable (specialty)
Recycling Code
7 (Other, but aiming for PET stream)
7
Carbon Footprint
Significantly lower than PET
~30 kg CO₂e / kg