Does Acrylic Turn Yellow? Exploring the Science Behind It

Acrylic, a popular material known for its clarity and durability, can indeed turn yellow over time. This phenomenon, known as yellowing, is caused by a variety of factors, including exposure to UV radiation, high temperatures, and certain chemicals.

UV radiation, especially from the sun, is a primary cause of yellowing in acrylic. The UV rays can break down the chemical bonds in the acrylic, leading to discoloration. This is why acrylic items that are frequently exposed to sunlight, such as outdoor signs or windows, are more prone to yellowing.

High temperatures can also contribute to yellowing. Acrylic has a certain temperature range within which it remains stable. When exposed to temperatures outside this range, the material can degrade and turn yellow.

Certain chemicals, such as some cleaning agents, can react with the acrylic and cause discoloration. It's important to use only approved cleaning products when cleaning acrylic items to avoid this issue.

To prevent yellowing, it's recommended to use UV-stabilized acrylic for outdoor applications and to avoid exposing acrylic items to high temperatures or harsh chemicals. Regular cleaning and maintenance can also help preserve the clarity of acrylic over time.