Eco-friendly PLA Polylactic Acid Card

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Polylactic Acid, most commonly known as PLA, is a polymer made from renewable resources. Contrary to other thermoplastics which are petroleum-based, some of the raw materials used for PLA’s production include corn starch, tapioca roots, or sugarcane. Its

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Description
PLA is a thermoplastic, meaning that it can be melted and reshaped without significantly degrading its mechanical properties. Hence, PLA is mechanically recyclable.PLA is a polyester produced by fermentation under controlled conditions of a carbohydrate source like corn starch or sugarcane. Its building blocks can either be lactic acid or lactide monomers. They will later be polymerized into PLA.

Initially, corn goes through wet milling. Here’s were the starch gets separated. The starch is then mixed with acid or enzymes and heated. This process “breaks” starch into dextrose (D-glucose), or corn sugar. Finally, fermentation of glucose produces L-Lactic acid, which will be the basic constituent of PLA.

Two methods for manufacturing PLA plastic from lactic acid are applied. The first one uses lactide as an intermediate state, which results in greater molecular weight. The second method consists in the direct polymerization of lactic acid.

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What Are the Benefits?
PLA is bio-based and biodegradable. These are the most outstanding properties, especially considering that one does not automatically imply the other. Being bio-based implies that the material is derived from biomass. As for being biodegradable, PLA undergoes a transformation into natural material, such as water, carbon dioxide, and composite. This process is carried out by microorganisms in the environment and is strongly dependent on conditions such as temperature and humidity.

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