Comparison
Regenerated Cellulose Transparent M vs PEEK
A side-by-side comparison of Regenerated Cellulose, Transparent Grade M and Polyether Ether Ketone.
Physical
Density
1.45 g/cm³
1.32 g/cm³
Water Absorption (24h)
10.0 %
0.15 %
Transparency
Exceptional
Opaque (amber)
Shrinkage
5.0 - 10.0 %
1.1 – 1.4 %
Mechanical
Young's Modulus
10 GPa
3.6 GPa
Tensile Strength
100 MPa
100 MPa
Elongation at Break
2.0 %
50 %
Impact Strength (Izod)
0.05 J/cm
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
100-150 °C
143 °C
Melting Point
None (decomposes)
343 °C
Continuous Service Temperature
60 °C
260 °C
Heat Deflection Temperature
60 °C
160 °C
Electrical
Dielectric Constant
6.0
3.2
Volume Resistivity
10¹⁰ Ω·cm
10¹⁶ Ω·cm
Dielectric Strength
20 kV/mm
—
Chemical resistance
Acids
Good resistance
Excellent
Bases
Good resistance
Excellent
Solvents
Insoluble in common organic solvents, but sensitive to moisture
Excellent
UV Resistance
Moderate
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Biodegradable (compost)
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
Moderate
~30 kg CO₂e / kg