Comparison
PSU Standard vs PLA
A side-by-side comparison of Polysulfone Standard and Polylactic Acid.
Physical
Density
1.24-1.25 g/cm³
1.24 g/cm³
Water Absorption (24h)
0.5-0.8 %
0.5 %
Transparency
Transparent
Semi-transparent
Shrinkage
0.5-0.8 %
0.3 – 0.5 %
Mechanical
Young's Modulus
2.0-2.5 GPa
3.5 GPa
Tensile Strength
60-75 MPa
50 – 65 MPa
Elongation at Break
50-100 %
6 %
Impact Strength (Izod)
10-15 kJ/m
16 J/m
Flexural Strength
—
80 MPa
Thermal
Glass Transition Temperature
170-185 °C
60 °C
Melting Point
N/A (amorphous)
150 – 160 °C
Continuous Service Temperature
130-160 °C
45 °C
Heat Deflection Temperature
150-170 °C (1.8 MPa)
55 °C
Electrical
Dielectric Constant
3.5-4.0
3.0
Volume Resistivity
10^13-10^15 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
15-20 kV/mm
—
Chemical resistance
Acids
Good
Fair
Bases
Fair
Poor
Solvents
Fair (ketones, chlorinated hydrocarbons)
—
UV Resistance
Fair
Poor
Alcohols
—
Fair
Hydrolysis
—
Poor
Sustainability
Recyclability
Recyclable (difficult)
Industrially compostable
Recycling Code
7 (Other)
7
Carbon Footprint
High
~1.6 kg CO₂e / kg
Bio-based Content
—
100 %