In polymers, what is the main function of lubricants?

In polymers, what is the main function of lubricants?

• A. Decrease the viscosity of the polymer making it easier to work with
• B. Fire retardants improve safety
• C. Pigments give colour
• D. Plasticisers increase flexibility

Answer: (D)

Lubricants in polymers are about helping the material move and process more easily, and the way this happens most effectively is through plasticisers. Plasticisers insert between polymer chains, reducing the intermolecular forces that hold the chains together and increasing their mobility. This lowers stiffness and makes the material more flexible and ductile, which is why the main effect described is increased flexibility. Other additives like fire retardants or pigments serve different roles, and simply lowering viscosity isn’t the primary outcome for lubricants in this context.

Lubricants in polymers are about helping the material move and process more easily, and the way this happens most effectively is through plasticisers. Plasticisers insert between polymer chains, reducing the intermolecular forces that hold the chains together and increasing their mobility. This lowers stiffness and makes the material more flexible and ductile, which is why the main effect described is increased flexibility. Other additives like fire retardants or pigments serve different roles, and simply lowering viscosity isn’t the primary outcome for lubricants in this context.