polymelkesyre

Polymelkesyre, often abbreviated as PLA, is a biodegradable and biocompatible polymer derived from renewable resources such as corn starch or sugarcane. It belongs to the polyester family and is synthesized through the polymerization of lactic acid. PLA is a thermoplastic, meaning it can be melted and reshaped multiple times.

The production of PLA typically involves two main methods: ring-opening polymerization of lactide (a cyclic dimer of lactic acid) or direct polycondensation of lactic acid. The properties of PLA can be tailored by adjusting its molecular weight and crystallinity, allowing for a range of applications. It is known for its good mechanical strength, rigidity, and transparency.

PLA has gained significant traction as a sustainable alternative to traditional petroleum-based plastics. Its biodegradability means it can decompose under specific industrial composting conditions, reducing landfill waste. This characteristic makes it suitable for a variety of uses, including food packaging, disposable tableware, 3D printing filaments, textiles, and biomedical implants. While it offers environmental benefits, its complete biodegradation requires controlled conditions and is not typically achieved in natural environments like home compost or landfills.