PLA

Polylactic acid (PLA) is a biodegradable thermoplastic polyester that can have amorphous, semi-crystalline or crystalline structures. Its popularity as a sustainable alternative to fossil-based plastics has increased due to its low environmental impact and its origin from renewable resources such as corn, cassava, sugarcane and sugar beets.

PLA is a versatile material with good tensile strength, stiffness and biocompatibility. Its optical properties make it suitable for applications requiring transparency or a glossy surface. It is commonly used in applications such as packaging, disposable cutlery, textiles and medical implants.

PLA can break down into carbon dioxide and water under specific composting conditions. This is one of its main advantages and helps offset some of the material’s limitations. PLA has low heat resistance, with a glass transition temperature of approximately 60°C, which limits its use to low-temperature applications. In addition, PLA is susceptible to hydrolysis, which can affect its durability and long-term stability.

Key properties:

• – Biodegradability and biocompatibility
• – Renewable raw materials
• – Mechanical and optical properties

Limitations:
– Limited heat and chemical resistance
– Processing parameters differ from those of conventional plastics (e.g., polypropylene)