Polyvinyl alcohol (PVOH) is a versatile synthetic polymer known for its water solubility and film-forming properties. It's used in papermaking, textiles, and as a stabilizer in emulsion polymerization. PVOH films are ideal for packaging, being biodegradable and non-toxic. Ethylene-vinyl alcohol (EVOH), a copolymer of PVOH, boasts superior barrier qualities against gases, making it perfect for food packaging and fuel tanks. Both PVOH and EVOH are pivotal in industries seeking sustainable and protective material solutions.