Bioplastics
PLLA Stereocomplex — Poly(L-lactic acid), Stereocomplex Grade GG
PLLA Stereocomplex Grade GG is a stereoregular polymer of L-lactic acid. When combined with PDLA in a specific ratio, it forms a stereocomplex structure with a significantly higher melting point and improved mechanical properties compared to either homopolymer alone. This makes it valuable for high-temperature PLA applications.
PLLASTEREOPLA-GG
Manufacturers
2
Grades
2
Applications
4
Equivalents
1
Physical Properties
- Density
- 1.27 g/cm³
- Water Absorption (24h)
- 0.25 %
- Transparency
- Good
- Shrinkage
- 1.5 - 4.0 %
Mechanical Properties
- Young's Modulus
- 3.8 GPa
- Tensile Strength
- 60 MPa
- Elongation at Break
- 2.5 %
- Impact Strength (Izod)
- 0.2 J/cm
Thermal Properties
- Glass Transition Temperature
- 55-60 °C
- Melting Point
- 220-230 °C (stereocomplex)
- Continuous Service Temperature
- 70 °C
- Heat Deflection Temperature
- 75 °C
Electrical Properties
- Dielectric Constant
- 3.5
- Volume Resistivity
- 10¹¹ Ω·cm
- Dielectric Strength
- 25 kV/mm
Chemical Resistance
- Acids
- Poor resistance
- Bases
- Poor resistance
- Solvents
- Resistant to oils and greases, but swells in chlorinated hydrocarbons
- UV Resistance
- Poor
Sustainability
- Recyclability
- Compostable (industrial)
- Recycling Code
- 7 (Other)
- Carbon Footprint
- Lower than fossil-based plastics
Manufacturing compatibility
Injection MoldingExtrusionFilm Blowing
Applications
High-Temperature Packaging
Automotive Components
Electronics
Durable Goods (in stereocomplex blends)
Available grades
PLLA-STC-GG-101PLLA-STC-GG-202