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Poly L Lactic Acid Biopolymer (PLLA)

Alternative and trade names
Poly L Lactic Acid Biopolymer (PLLA)
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Description

Poly L Lactic acid - Biopolymer is a Biomer® P226. These resins are produced from renewable resources. Renewable feedstock meets the criteria of sustainable response. In addition they do not add to the CO₂ concentration in the atmosphere (“Responsible Care”).


Components made of this resin are waterproof. These resins are inert towards water, even after extended exposure. They are also fairly resistant towards fats and oils. Thus components made of these resins protect sensitive products against moisture and oily soiling.


Components made of this polymer can be autoclaved. Components made of PHB thermoplasts retain their original shape at 121 °C or 132 °C. Because of this perishable goods can be canned into packages produces of PLLA and preserved by steam sterilization.


Components made of this polymer are toxicologically safe. The monomer as well as the polymer are natural components and metabolites of human cells. They are not toxic even at high concentrations. Thus PLLA formulations can be used for articles which come into contact with skin, feed or food.


Components made of PLLA are fully biodegradable. In composts where nitrogen and phosphates are abundant, articles made with Biomer® resins are taken up by bacteria and fungi as nutrient. No toxic by-products are accumulated. Under optimal conditions thin walled injection molded articles are composted within 2 months.

Ashby charts

See where Poly L Lactic Acid Biopolymer (PLLA) falls on the material property chart for Density against Elastic modulus in your materials selection and design process. Our Ashby charts are interactive with more technical data upon clicking. Sign up to get access to this premium feature for free.

Properties

General

Crystallinity

ccryst

60 - 70 % at 20 °C

Density

ρ

1.25 g/cm³ at 20 °C

Melt mass-flow rate

MFR

9 - 13 g/10min at 20 °C

Shrinkage

cshrink

1.3 % at 20 °C

molding shrinkage

Water absorption

cwater

0.4 % at 23 °C

24h

Mechanical

Elastic modulus

E

1.7 - 2 GPa at 20 °C

Show Biobased / Biopolymer materials with Elastic modulus of 1.7 - 2 GPa at 20 °C

Elongation

A

6 - 9 % at 20 °C

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Flexural strength

σbend

35 MPa at 20 °C

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Hardness, Shore D

HS D

67 [-] at 20 °C

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Impact strength, Izod notched

IIzod,not

2.7 kJ/m² at 20 °C

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Impact strength, Izod unnotched

IIzod,unnot

30 kJ/m² at 20 °C

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Yield strength

YS

24 - 27 MPa at 20 °C

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Thermal

Crystallization temperature

Tx

80 - 100 °C

Max service temperature

Tmax

120 °C

Min service temperature

Tmin

30 °C

Vicat softening temperature

Tsoft

96 °C

Technological properties

Other

The key features are: Can be processed as classic thermoplasts; Biodegradable - Non toxic; Waterproof; Only small tendency to creep; Free from even traces of catalysts!; Highly crystalline (60 to 70%); Excellent resistance to solvents; Temperature of use -30 °C to 120 °C; Shrinkage: 1.3%;

Processing methods

Processing Methods: Extrusion and Injection Molding

Do you need more data regarding this material?

This material data has been provided by Goodfellow.

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.