the modified PVA film has become an important research direction. However
due to the large number of hydrophilic groups (—OH) in the PVA structure
the weak mechanical properties and poor water resistance of hydrophilic PVA film seriously limit its practical applications. This article summarizes the methods of water resistance modification of PVA film at home and abroad
such as esterification crosslinking
aldol condensation
compound plasticization
nano-reinforcement and blending
etc.
which will help to further promote the research of PVA water resistance modification
provide a reference for the design and preparation of high-performance PVA film and further expand the application range of PVA film.