Cutinases Catalyze the Deacetylation of Polyvinyl Acetate

摘要

Polyvinyl acetate (PVAc) resins are vinyl acetate containing thermoplastic copolymers used for making emulsion (latex) products. They are produced in both homopolymer and copolymer types and sold in the form of powders or beads or as latex base-stock for compounded emulsions. Major applications include interior and exterior paints, adhesives, paper coatings, and textile treatments. Complete de-acetylation of PVAc leads to the formation of polyvinyl alcohol (PVOH or PVA). PVA is easily dispersed and readily dissolves in water. PVOH resins have excellent film forming and adhesive properties. De-acetylation is traditionally carried out using strong alkaline treatments. However, this treatment is hard to control.