Tiffany C. Suekama, Vara Aziz, Zahra Mohammadi, Cory Berkland and Stevin H. Gehrke Synthesis and characterization of poly(N-vinyl formamide) hydrogels—A potential alternative to polyacrylamide hydrogels Journal of Polymer Science Part A: Polymer Chemistry 51
N-vinyl formamide (NVF) is an isomer of acrylamide (AAm), yet PNVF gels have not been synthesized and characterized, unlike widely used PAAm gels. Because NVF is liquid, less toxic than AAm, and because PNVF gels can be efficiently hydrolyzed to polyvinylamine, PNVF gels could also have significant technological utility. Thus solution-cast, molded poly(N-vinyl formamide) hydrogels were created by copolymerization/crosslinking of aqueous NVF with a novel cross-linker, 2-(N-vinylformamido) ethylether (NVEE). PNVF gels are slightly more hydrophilic than PAAm gels in terms of the χ parameter, but gels of the same polymer volume fraction have the same moduli and fracture properties.
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