Subsequently, The PVAc undergoes a process often known as alcoholysis (or hydrolysis) while in the presence of the Liquor and a strong foundation or acid catalyst. The acetate groups in the PVAc are changed by hydroxyl groups, leading to the formation of PVA. Experts increase PVA Homes via chemical modifications, https://www.tjcyindustrialchem.com/news/what-is-pva.html