polyvinyylitolueni

Polyvinyltoluene, often abbreviated as PVT, is a synthetic polymer derived from the polymerization of vinyltoluene monomer. Vinyltoluene is an aromatic hydrocarbon with a vinyl group and a methyl group attached to a benzene ring. PVT shares many properties with polystyrene, a closely related polymer, due to the presence of the phenyl group in its repeating unit.

PVT is a rigid, transparent, and relatively brittle thermoplastic. It exhibits good electrical insulating properties and a high refractive index, making it suitable for certain optical applications. Its thermal properties, such as glass transition temperature and melting point, are influenced by its molecular weight and specific isomer composition. PVT can be processed using standard thermoplastic techniques like injection molding and extrusion.

While not as widely used as polystyrene, PVT finds applications in niche areas. Its clarity and ability to hold color make it useful in decorative items and some types of lighting fixtures. It has also been explored for use in specialized coatings and as a component in certain composite materials. The production of PVT involves free-radical polymerization of vinyltoluene, with reaction conditions carefully controlled to achieve desired molecular weights and properties. Environmental considerations and end-of-life options for PVT are similar to those for other thermoplastic polymers.