Corn plastic, also known as polylactic acid (PLA), is a biodegradable and compostable plastic made from the starch of corn. It is a plant-based alternative to traditional plastic made from petrochemicals.

PLA is produced by fermenting the starch from corn into lactic acid, which is then polymerized to create the plastic. It can be used to make a variety of products, including cups, plates, utensils, packaging, and 3D printing filament.

Corn plastic has several advantages over traditional plastic. It is biodegradable and compostable, meaning it can break down naturally over time. It is also made from a renewable resource (corn) and produces fewer greenhouse gases in production compared to traditional plastic.

However, PLA also has some disadvantages. It is not as strong as traditional plastic and can be more expensive to produce. It can also be more brittle and less flexible.

Despite these challenges, corn plastic is becoming increasingly popular as a more environmentally friendly alternative to traditional plastic. It is used in a variety of applications and is expected to continue to grow in popularity as sustainability concerns rise.