Comparison
High Acrylonitrile Nitrile Butadiene Rubber (NBR) vs PLA
A side-by-side comparison of Nitrile Butadiene Rubber (NBR) - High Acrylonitrile Content and Polylactic Acid.
Physical
Density
1.00 - 1.05 g/cm³
1.24 g/cm³
Water Absorption (24h)
0.1 - 0.3 %
0.5 %
Transparency
Opaque
Semi-transparent
Shrinkage
1.0 - 2.0 %
0.3 – 0.5 %
Mechanical
Young's Modulus
0.03 - 0.07 GPa
3.5 GPa
Tensile Strength
15 - 25 MPa
50 – 65 MPa
Elongation at Break
200 - 400 %
6 %
Impact Strength (Izod)
N/A
16 J/m
Flexural Strength
—
80 MPa
Thermal
Glass Transition Temperature
-15 to -5 °C
60 °C
Melting Point
N/A
150 – 160 °C
Continuous Service Temperature
-10 to 120 °C
45 °C
Heat Deflection Temperature
N/A
55 °C
Electrical
Dielectric Constant
3.8 - 4.5
3.0
Volume Resistivity
10^9 - 10^11 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
8 - 12 kV/mm
—
Chemical resistance
Acids
Good
Fair
Bases
Good
Poor
Solvents
Excellent resistance to aliphatic hydrocarbons, fuels, oils, and many solvents
—
UV Resistance
Fair
Poor
Alcohols
—
Fair
Hydrolysis
—
Poor
Sustainability
Recyclability
Limited
Industrially compostable
Recycling Code
N/A
7
Carbon Footprint
Moderate
~1.6 kg CO₂e / kg
Bio-based Content
—
100 %