Comparison
PVDC Barrier Film vs PLA
A side-by-side comparison of Polyvinylidene Chloride for Barrier Films and Polylactic Acid.
Physical
Density
1.6-1.7 g/cm³
1.24 g/cm³
Water Absorption (24h)
<0.2 %
0.5 %
Transparency
Good
Semi-transparent
Shrinkage
0.3-0.6 %
0.3 – 0.5 %
Mechanical
Young's Modulus
1.0-1.5 GPa
3.5 GPa
Tensile Strength
30-50 MPa
50 – 65 MPa
Elongation at Break
10-40 %
6 %
Impact Strength (Izod)
20-40 J/m
16 J/m
Flexural Strength
—
80 MPa
Thermal
Glass Transition Temperature
70-80 °C
60 °C
Melting Point
N/A (degrades)
150 – 160 °C
Continuous Service Temperature
50-60 °C
45 °C
Heat Deflection Temperature
50-60 °C
55 °C
Electrical
Dielectric Constant
3.5-4.5
3.0
Volume Resistivity
10¹⁰-10¹² Ω⋅cm
10¹⁴ Ω·cm
Dielectric Strength
10-20 kV/mm
—
Chemical resistance
Acids
Good resistance
Fair
Bases
Good resistance
Poor
Solvents
Insoluble in most common solvents
—
UV Resistance
Fair (requires formulation)
Poor
Alcohols
—
Fair
Hydrolysis
—
Poor
Sustainability
Recyclability
Challenging due to multilayer structures
Industrially compostable
Recycling Code
3 (PVC) or depends on multilayer
7
Carbon Footprint
Moderate to High
~1.6 kg CO₂e / kg
Bio-based Content
—
100 %