PLA Compound SC1

Alternative and trade names
Polylactic acid, PLA, Reinforced PLA, PLA compound

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Description

PLA is a biobased polymer derived from natural resources and offers a significant reduction in carbon footprint compared to oil-based plastics. Compound SC1 is a 20% glass reinforced compound, for use in injection molded applications, based on full stereocomplex PLA produced with PLLA and PDLA homopolymers using proprietary Total Corbion PLA technology. Compared to standard and high heat PLA, full stereocomplex PLA compounds have higher melting points and improved mechanical properties, similar to glass reinforced engineering plastics like Nylon 6 and PBT.

Biobased content of 78%

Biobased carbon content of 98%

Datasheet includes development grades, available for sampling, all data is preliminary. Total Corbion PLA does not commercially produce these compounds. Typical properties, not to be interpreted as specifications

This material data has been provided by Total Corbion.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
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.

Ashby charts

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Properties

General

Property	Value
Bio-based content	98.0 % Show Supplier Material materials with Bio-based content of 98.0 %

Mechanical

Property	Value	Comment
Elastic modulus	8.3 GPa Show Supplier Material materials with Elastic modulus of 8.3 GPa	ISO 527
Elongation	2.0 Show Supplier Material materials with Elongation of 2.0	ISO 527
Flexural modulus	6.0 GPa Show Supplier Material materials with Flexural modulus of 6.0 GPa	ISO 178
Impact strength, Charpy notched	10.0 kJ/m² Show Supplier Material materials with Impact strength, Charpy notched of 10.0 kJ/m²	ISO 179
Impact strength, Charpy unnotched	44.0 kJ/m² Show Supplier Material materials with Impact strength, Charpy unnotched of 44.0 kJ/m²
Tensile strength	135.0 MPa Show Supplier Material materials with Tensile strength of 135.0 MPa	ISO 527

Thermal

Property	Value	Pressure	Comment
Heat deflection temperature	195.0 °C Show Supplier Material materials with Heat deflection temperature of 195.0 °C	1.8 MPa	ISO 75-1/A
	211.0 °C Show Supplier Material materials with Heat deflection temperature of 211.0 °C	0.45 MPa	ISO 75-1/B
Melting point	220.0 °C Show Supplier Material materials with Melting point of 220.0 °C		DSC

Technological properties

Property

Fillers

20% Glass Fiber

Other

NOTICE REGARDING USE RESTRICTIONS: Unless specifically agreed to in writing, Total Corbion PLA will not knowingly market any product into any of the following commercial or developmental applications:

bottles or preforms, unless specific arrangements on recycling and end-of-life are in place

microbeads used in personal care products, including without limitation, cosmetics or over-the-counter drugs

components of products intended for human or animal consumption

any application that is intended to be used inside the human body.

Processing methods

The compounded product should be dried to <400ppm before injection molding. Precautions should be taken to avoid moisture absorption of the dried granulate during processing, for example while sitting in the hopper of the injection molding machine. In general, injection molding conditions should be selected to avoid high stresses and high (back) pressures on the material in order to limit length reduction of the glass fibers.

It is recommended to select an injection molding machine with a low ratio of barrel volume / show weight to avoid degradation in the barrel. A barrel volume of maximum 5 times the shot weight is recommended.

The achievable cycle time for automatic operation depends on a number of machine, mold and product properties. As the product needs time to crystallize into full stereocomplex PLA, the crystallization time in the mold typically at 120°C is the rate limiting step.

Although automatic operation will also run using lower mold cooling temperatures, this is not recommended because this will result in products with reduced thermal and dimensional stability.

Typical settings, may require optimization:

Predrying: minimum 4 hours at 85°C - Prefered to check moisture content of dried resin with e.g. Karl-Fischer or Brabender aquatrac

Throat: 30°C

Feed zone: 180°C

Compression zone: 220°C

Metering zone: 220°C

Nozzle: 230°C - Lower temperature can cause freezing of the nose when using a cold runner

Hot runner: 230°C

Tmold: 80-140°C - Lower mold temperature can result in failure to form full stereocomplex PLA

Barrel volume: Maximum 5 times the shot volume

Screw speed As slow as possible

PLA Compound SC1

Description

Ashby charts

Materials by this supplier

Properties