O álcool polivinílico (PVA ou PVOH, do inglês polyvinyl alcohol) é um polímero sintético solúvel em água, amplamente utilizado em diversas indústrias devido às suas propriedades únicas. Sua fórmula química básica pode ser representada por (C2H4O)n(C_2H_4O)_n(C2H4O)n, sendo formado por unidades repetidas de vinil álcool. No entanto, o vinil álcool em si é instável e não pode ser polimerizado diretamente. Assim, o PVA é obtido por meio da hidrólise (ou alcoolise) do acetato de polivinila (PVAc), um processo que remove os grupos acetato e os substitui por grupos hidroxila.O PVA é um polímero
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Partially hydrolyzed polyvinyl alcohol (PVA) is a versatile water-soluble polymer that results from the controlled hydrolysis of polyvinyl acetate. Unlike fully hydrolyzed PVA, which has more than 98% of its acetate groups converted to hydroxyl groups, partially hydrolyzed PVA typically has a hydrolysis degree between 85% and 89%. This variation gives it unique properties, making it suitable for specific applications across industries like textiles, adhesives, construction, paper, and pharmaceuticals. One of the defining features of partially hydrolyzed PVA is its balance between water solubi
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