Bioplastics
PDLLA High Molecular Weight — Poly(D,L-lactic acid), High Molecular Weight Grade W
PDLLA High Molecular Weight Grade W is an amorphous polymer synthesized for applications requiring enhanced mechanical integrity and a more controlled, slower degradation profile compared to lower molecular weight PDLLA. Its high molecular weight contributes to improved tensile strength and toughness, making it suitable for longer-term biomedical implants and drug delivery systems.
PDLLAHI-MW-PDLLA-W
Manufacturers
2
Grades
2
Applications
4
Equivalents
1
Physical Properties
- Density
- 1.26 g/cm³
- Water Absorption (24h)
- 0.6 %
- Transparency
- High (amorphous)
- Shrinkage
- 3.5 - 6.5 %
Mechanical Properties
- Young's Modulus
- 2.5 GPa
- Tensile Strength
- 50 MPa
- Elongation at Break
- 4.0 %
- Impact Strength (Izod)
- 0.2 J/cm
Thermal Properties
- Glass Transition Temperature
- 48-52 °C
- Melting Point
- None (amorphous)
- Continuous Service Temperature
- 0 °C
- Heat Deflection Temperature
- 42 °C
Electrical Properties
- Dielectric Constant
- 3.1
- Volume Resistivity
- 10¹³ Ω·cm
- Dielectric Strength
- 19 kV/mm
Chemical Resistance
- Acids
- Poor resistance
- Bases
- Poor resistance
- Solvents
- Swells in many organic solvents, particularly esters and ketones
- UV Resistance
- Poor
Sustainability
- Recyclability
- Compostable (industrial), implantable (biocompatible)
- Recycling Code
- 7 (Other)
- Carbon Footprint
- Lower than fossil-based plastics
Manufacturing compatibility
Injection MoldingExtrusionMelt Spinning3D Printing
Applications
Biomedical Devices
Sutures
Bone Fixation Devices
Controlled Drug Release Systems
Available grades
PDLLA-HM-W-5050PDLLA-HM-W-6040