Why is PLA not Widely Used?

Polylactic acid or PLA is a biodegradable and eco-friendly thermoplastic polymer made from renewable materials such as corn starch, sugarcane, potato starch, and soybeans. While PLA has many advantages such as biodegradability, sustainability, and ease of use, it is still not widely used in various industries. In this article, we will explore the reasons behind the limited use of PLA.

High Cost

One of the major reasons for the limited use of PLA is its higher cost compared to other conventional plastics. The renewable sources used to create PLA are currently more expensive than petroleum-based plastics such as polypropylene and polyethylene. Additionally, the manufacturing process used to produce PLA is also more costly than traditional plastics.

Limited Heat Resistance

Another major reason for the limited use of PLA is its limited heat resistance compared to other plastics. PLA has a low melting point of around 60°C, which makes it unsuitable for applications that involve high heat. For example, PLA is not suitable for use in applications such as hot beverage cups or hot food containers.

Limited Water Resistance

PLA is also known to have limited water resistance, which is another factor that limits its use in certain applications. PLA can break down and weaken when it comes into contact with water, making it unsuitable for products that require water-resistance.

Limited Properties

PLA also has some limitations regarding its properties. It is a brittle material, prone to cracking or breaking when subjected to deformation or heavy impacts. Additionally, PLA has a relatively short shelf life, which makes it less suitable for use in long-term storage containers.

However, despite these limitations, PLA remains an attractive option for many applications. Its biodegradability and eco-friendliness are its most significant advantages that make it a valuable alternative to traditional plastics. PLA is widely used in the packaging industry, 3D printing, and medical applications, to name a few.

In conclusion, while PLA has its limitations, it remains a promising biodegradable and eco-friendly alternative to traditional plastics. And as more research is conducted and technology improves, PLA will become more cost-effective and better suited for a wider range of applications.