Which additive would you use to make a polymer easier to process?

Using lubricants as an additive is key in the processing of polymers because they significantly reduce friction within the polymer matrix. This reduction in friction allows for smoother flow during processes such as extrusion or injection molding, making it easier to handle and shape the material. Lubricants can also help to lower the viscosity of the polymer, enabling it to be processed at lower temperatures and pressures, which can lead to improved production efficiency and quality of the final product.

Other additives serve different functions; for example, colour pigments are primarily used for aesthetic purposes, stabilizers enhance the longevity and performance of the polymer under environmental conditions, and fillers are added to improve bulk properties or reduce cost but do not primarily aid in ease of processing. Therefore, lubricants specifically target processing efficiency, making them the most suitable choice for this purpose.