Fabrication and characterization of metal organic frameworks/ polyvinyl alcohol cryogel and their application in extraction of non-steroidal anti-inflammatory drugs in water samples

Cryo-Structuring of Polymeric Systems. Poly(Vinyl Alcohol)-Based Cryogels Loaded with the Poly(3-hydroxybutyrate) Microbeads and the Evaluation of Such Composites as the Delivery Vehicles for Simvastatin

“…At first, aqueous solutions of PVA g with one of the polymer concentrations within the range of 73–189 g/L were prepared in accordance with the procedure published elsewhere [ 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 ]. To this end, a known amount of PVA g powder was suspended in the required volume of water to reach desired polymer concentration in the solution for further employment for the fabrication of cPVACGs; in doing so, the amount of water, which was contained in the wet PHB-mecrobeads, was also taken into account upon the corresponding calculations.…”

“…Thanks to their remarkable properties and simple preparation procedure, these macro-porous gels are of significant applied interest in various fields, especially in biomedical [ 1 , 2 , 3 , 4 , 7 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 ] and biotechnological [ 3 , 19 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ] areas. When the initial liquid system contains, beside dissolved PVA, some disperse filler(s) (both of organic and inorganic nature), or components that can be transformed to the discrete phase entrapped in the bulk of the continuous phase, the freeze–thaw gelation results in hetero–phase composite (filled) cryogels ( cPVACGs ) [ 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 ]. Along with the above indicated factors capable of stipulating the properties o...…”

“…When the initial liquid system contains, beside dissolved PVA, some disperse filler(s) (both of organic and inorganic nature), or components that can be transformed to the discrete phase entrapped in the bulk of the continuous phase, the freeze–thaw gelation results in hetero–phase composite (filled) cryogels ( cPVACGs ) [ 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 ]. Along with the above indicated factors capable of stipulating the properties of the non-filled PVA cryogels, factors that influence characteristics of the fillers are: their chemical nature, particle size and amount, inner porosity of the discrete phase, mechanical rigidity, compatibility with the continuous phase influence of the physico-chemical parameters and microstructure of the resultant cPVACGs [ 5 , 15 , 19 , 23 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 ]. The latter, like the non-filled PVA cryogels, are also considered promising biomedical and biotechnological materials [ 5 ,…”

Trends in sensitive detection and rapid removal of sulfonamides: A review

“…Polymers [117][118][119][120][121], molecularly imprinted polymers (MIPs) [47,[122][123][124][125][126], MOFs [127][128][129][130], and COFs [35,[131][132][133][134] have been utilized in the sensitive detection of sulfonamides. Their fascinating characteristics improve the enrichment performance.…”

A hierarchical porous composite magnetic sorbent of reduced graphene oxide embedded in polyvinyl alcohol cryogel for solvent‐assisted‐solid phase extraction of polycyclic aromatic hydrocarbons

“…Using this technique, PAHs could be extracted from the sample solution based on the partition between the liquid phase, which is the extraction solvent, and the surface of the solid phase sorbent. PVA cryogel is an interesting porous material since it can entrap other adsorption materials and also hold an extraction solvent [20,21]. PVA cryogel can be easily prepared under cryogenic condition, and after thawing the ice crystals generated by freezing, the pores created can form the template for an interconnected hierarchical porous network [22].…”