Journal
MEMBRANES
Volume 12, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/membranes12030347
Keywords
polyvinyl alcohol film; water resistance; modification method; application
Categories
Funding
- Qilu University of Technology (Shandong Academy of Sciences) International Cooperation Research Special Fund Project [QLUTGJHZ2018028]
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Polyvinyl alcohol (PVA) is a biodegradable synthetic resin that can reduce white pollution in the environment. PVA film has excellent properties, but lacks water resistance. Therefore, it is necessary to modify PVA to improve its water resistance and expand its application range.
Polyvinyl alcohol (PVA) is one of the few biodegradable synthetic resins from petroleum-based sources that can alleviate white pollution in the environment. PVA film materials have excellent properties, such as high barrier, high transparency, high toughness, biocompatibility, and adjustable water solubility. However, due to the presence of hydrophilic hydroxyl groups in the side chain of PVA resin, when PVA film is placed in a humid or water environment, swelling or even dissolution will occur, which greatly limits its application. Therefore, it is necessary to modify PVA resin to improve water resistance without reducing other properties and can also impart various functionalities to it, thereby widening the application range. This paper reviews the water-resistant modification methods of polyvinyl alcohol and the application of water-resistant films and provides an outlook on the development trend of PVA water-resistant films.
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