plastifitseerimist

Plastifitseerimist, often translated as plasticizing or plasticization in English, refers to the process of increasing the plasticity or flexibility of a material. This is most commonly applied to polymers, such as plastics and rubber, to make them easier to process and shape. The addition of a plasticizer, a substance that is typically a liquid or a low-melting solid, is the primary method for achieving this. Plasticizers work by reducing the intermolecular forces between polymer chains, allowing them to slide past each other more easily. This lowers the glass transition temperature of the polymer, making it softer and more pliable at room temperature or during manufacturing processes.

The effect of plasticizers is not permanent; they can migrate out of the polymer over time, leading to a loss of flexibility and a return to a more rigid state. This phenomenon is known as plasticizer migration or volatilization and can affect the long-term performance and durability of plasticized products. Different types of plasticizers exist, chosen based on their compatibility with the specific polymer, desired properties, and environmental considerations. Common examples include phthalates, adipates, and citrates. The process is crucial in the manufacturing of a wide range of products, from flexible films and cables to medical devices and flooring.