Polyvinyl pyrrolidone is a vinyl polymer built from N-vinylpyrrolidone units, in which a lactam ring hangs from each backbone carbon [1]. The amide carbonyl and the ring nitrogen make the polymer a strong hydrogen-bond acceptor and strongly hygroscopic, and the same polarity makes it soluble in water and in alcohols while insoluble in hydrocarbons [2]. Because the lactam is non-ionic, the polymer carries no charge at any pH and its solutions stay stable across the pH range [1]. The ring also complexes iodine and phenolic compounds, and the chain adsorbs onto polar surfaces through the carbonyl oxygen [3]. Molar mass spans several orders of magnitude, and the chain-length grade rather than the chemistry sets the viscosity of a solution [2].
- pvp
- lactam ring
- hygroscopic polymer
- hydrogen-bond acceptor
- iodine complex
Synthesis and properties of polymers·Polymers and Plastics·Materials Science·Physical Sciences
References
- Sapir, L.; Stanley, C.B.; Harries, D.; Properties of Polyvinylpyrrolidone in a Deep Eutectic Solvent. The Journal of Physical Chemistry A 2016, 120, 3253-3259, 10.1021/acs.jpca.5b11927.
- Lubasova, D.; Niu, H.; Zhao, X.; Lin, T.; Hydrogel properties of electrospun polyvinylpyrrolidone and polyvinylpyrrolidone/poly(acrylic acid) blend nanofibers. RSC Advances 2015, 5, 54481-54487, 10.1039/c5ra07514a.
- Pourmadadi, M.; Shamsabadipour, A.; Aslani, A.; Eshaghi, M.M.; Rahdar, A.; Pandey, S.; Development of Polyvinylpyrrolidone-Based nanomaterials for biosensors applications: A Review. Inorganic Chemistry Communications 2023, 152, 110714, 10.1016/j.inoche.2023.110714.