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What properties make PVC useful in foams, films, and fibres?

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Diagram illustrating a homopolymer arrangement using polyvinyl chloride as an example, showing a chain of identical repeating vinyl chloride units with the chemical structure highlighted. — polymer Industrial polymers are synthesized from simple compounds joined together to form long chains. For example, polyvinyl chloride is an industrial homopolymer synthesized from repeating units of vinyl chloride.

Polyvinyl chloride (PVC) is a versatile polymer whose utility in foams, films, and fibers is primarily derived from its ability to be modified into a flexible, plasticized state.12

Foams: PVC can be processed into foams by incorporating blowing agents—materials that decompose to release gas when heated—into the resin. When combined with plasticizers, the resulting material can be expanded to create lightweight, cellular structures suitable for various applications.31
Films and Fibers: In its pure form, PVC is rigid and difficult to process; however, the addition of plasticizers (sometimes up to 50 percent) transforms it into a flexible, inert material. This flexibility allows it to be manufactured into thin, pliable films and coated cloth products. The use of plastisols—a fluid suspension of fine PVC particles in plasticizer—further enables the creation of flexible items by spreading the material onto fabric or casting it into molds.12

These modifications allow PVC to overcome its inherent rigidity, providing the necessary versatility for consumer goods like upholstery, shower curtains, and protective gear.12