Polyglycolic acid (PGA)

Alternative and trade names


Polyglycolic acid (PGA) offers a combination of properties that differentiate it from other polymers, making it an exciting new addition to the Plastics Industry. PGA has mechanical properties equal to or superior to those of super engineering plastics such as PEEK and PPS. Its main features:

  • Biodegradability and hydrolyzability
  • High strength and toughness
  • High abrasion resistance
  • High solvent resistance
  • Easy processing
  • Properties


    Density ρ

    1.5 - 1.7 g/cm³ at 20 °C


    Elastic modulus E

    6 - 7 GPa at 20 °C

    Elongation A

    2 - 20 % at 20 °C

    Impact strength, Charpy unnotched Iunnot

    2 - 3 kJ/m² at 20 °C

    Max allowed stress σmax

    60 - 120 MPa at 20 °C

    at 2-20% strain


    Coefficient of thermal expansion α

    5.4E-5 1/K at 20 °C

    Melting point Tm

    220 - 230 °C

    Specific heat capacity cp

    1120 J/(kg·K) at 20 °C

    Thermal conductivity λ

    0.35 W/(m·K) at 20 °C


    Dielectric constant εr

    4.2 [-] at 20 °C

    Electrical resistivity ρel

    1.00E+12 Ω·m at 20 °C




    Technological properties

    Application areas

    Biodegradable food and beverage packaging, barrier layer in multilayer PET bottles

    Processing methods

    Injection molding, extrusion, thermoforming

    This material data has been provided by M-Base.

    All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
    Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.