Polyvinyl alcohol

Polyvinyl alcohol commonly known as PVA is an important material in materials science research and textile industry. It is used as a facilitator for speedy mixing of ceramic oxides. The hydrolysis of polyvinyl acetate in the presence of acids or alkalies yields polyvinyl alcohol. There is always a chance of retaining around 2 mole percentage of acetyl groups in the end product. Polyvinyl alcohol is easily soluble in water. When it is reacted with iodine, gives an intense blue colour. It can be used in the production of emulsions since it is a good protective colloid for aqueous emulsions. The other industries which use polyvinyl alcohol are suspension systems industry and adhesive industry. In textile industry, it is used only after the treatment with a concentrated aqueous solution of sodium sulphate containing calculated amounts of sulphuric acid and formaldehyde. Superlative water absorption property makes PVA fibers more attractive. Some other properties of PVA fibers are superior dimensional stability, quick washing and drying property, resistance to abrasion and outstanding tenacity.