| Formula / Notation | (C3H4O2)n |
|---|---|
| CAS Number | 26100-51-6 |
| Molecular Weight | Variable (polymer) |
| Melting Point | 130–180 °C |
| Boiling Point | Decomposes |
| Density | 1.21–1.25 g/cm³ |
| Solubility | Insoluble in water |
| Appearance | clear to white solid |
| Also Known As | PLA; polylactide; bioplastic |
| Category | Polymers & Plastics |
What is Polylactic acid?
Polylactic acid (PLA) is a biodegradable and bioactive thermoplastic aliphatic polyester derived from renewable resources such as corn starch and sugarcane. It is produced by ring-opening polymerisation of lactide or by condensation polymerisation of lactic acid. PLA is one of the most commercially important bioplastics — it combines good mechanical properties (comparable to PET) with biodegradability under industrial composting conditions. It has become the material of choice for 3D printing filaments (FDM/FFF process).
Formula & Notation
IUPAC Name: poly(lactic acid)
Other Names / Synonyms: PLA; polylactide; bioplastic
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 130–180 °C |
| Boiling Point | Decomposes |
| Density | 1.21–1.25 g/cm³ |
| Molecular Weight | Variable (polymer) |
| Solubility | Insoluble in water |
| Appearance | clear to white solid |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Polylactic acid (PLA) is a biodegradable and bioactive thermoplastic aliphatic polyester derived from renewable resources such as corn starch and sugarcane. It is produced by ring-opening polymerisation of lactide or by condensation polymerisation of lactic acid. PLA is one of the most commercially important bioplastics — it combines good mechanical properties (comparable to PET) with biodegradability under industrial composting conditions. It has become the material of choice for 3D printing filaments (FDM/FFF process).
3D printing filament (one of most common FDM materials). Biodegradable packaging and disposable tableware. Surgical sutures and implants (bioabsorbable). Drug delivery systems. Agricultural mulch films.
Non-toxic and biodegradable under industrial composting conditions (not home compost or marine environments). Low smoke toxicity when burned. FDA-approved for food contact. Consult SDS for specific grades and additives.
The formula or notation for Polylactic acid is: (C3H4O2)n