Plastifiatori

Plastifiatori is a term used to refer to substances or additives that increase the plasticity or flexibility of materials, most often polymers. In polymer processing, plastificatori function as plasticizers: small molecules that insert between polymer chains, reducing intermolecular forces and increasing free volume. This mechanism lowers the glass transition temperature and improves flexibility, ductility, and processability of the material. While the term can be used in broader contexts to denote devices or methods that plastify, in technical literature it most commonly denotes chemical additives.

Common plastifiatori include phthalates such as DEHP (di(2-ethylhexyl) phthalate), DINP (diisononyl phthalate), and DIDP, as well as adipates (for example, DOA) and citrate-based plasticizers (such as acetyl tributyl citrate, ATBC). Phthalates are the most widely used class, but several have regulatory restrictions due to health concerns; citrate-based plasticizers and other non-phthalate alternatives are increasingly employed for safer and more sustainable formulations.

Applications of plastifiatori are broad, with PVC being the primary polymer system. They are used to produce flexible films, cables and wires insulation, flooring, coatings, and various consumer plastics. They also appear in adhesives and sealants where enhanced workability is required.

Health and environmental considerations include concerns about potential endocrine-disrupting effects for some phthalates, leading to regulatory restrictions in toys, food-contact materials, and other consumer products in various regions. Plasticizers can migrate from products into air, dust, soil, or water, influencing recycling and waste management. Ongoing research seeks safer alternatives and formulations compatible with recycling processes.

See also: Plasticizer, PVC, Polymer additive.