Comparison
Chitosan Crosslinked vs PEEK
A side-by-side comparison of Chitosan, Crosslinked Grade DD and Polyether Ether Ketone.
Physical
Density
1.45 g/cm³
1.32 g/cm³
Water Absorption (24h)
3.0-6.0 %
0.15 %
Transparency
Good
Opaque (amber)
Shrinkage
2.5-5.0 %
1.1 – 1.4 %
Mechanical
Young's Modulus
1.5 GPa
3.6 GPa
Tensile Strength
40 MPa
100 MPa
Elongation at Break
4.0 %
50 %
Impact Strength (Izod)
0.3 J/cm
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
90-130 °C
143 °C
Melting Point
None (degrades)
343 °C
Continuous Service Temperature
70 °C
260 °C
Heat Deflection Temperature
60 °C
160 °C
Electrical
Dielectric Constant
4.8
3.2
Volume Resistivity
10¹¹ Ω·cm
10¹⁶ Ω·cm
Dielectric Strength
16 kV/mm
—
Chemical resistance
Acids
Soluble in dilute acids
Excellent
Bases
Good resistance
Excellent
Solvents
Reduced solubility in acidic solutions due to crosslinking
Excellent
UV Resistance
Poor
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Biodegradable (compost)
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
Low (utilizes waste streams)
~30 kg CO₂e / kg