Synthesis and characterization of hydrogels from cellulose acetate by esterification crosslinking with EDTA dianhydride

Synthesis, characterization and application of hydrogel derived from cellulose acetate as a substrate for slow-release NPK fertilizer and water retention in soil

“…Among the polymers 39 derived from renewable sources, the cellulose is highly desirable as 40 a raw material in the production of biodegradable superabsorbent 41 polymers because it is the most abundant natural polymer on earth 42 and not expensive [7]. 43 Senna et al [8] have reported that hydrogels can be produced 44 from a cellulose solution by esterification crosslinking. However, 45 because cellulose is very difficult to dissolve in common solvents, 46 Chang and Zhang [9] have proposed the use of new solvents, such mesh-10 and details should be found in De Urzedo et al [13].…”

“…Samples of GEDTA that were used in the FTIR 110 analysis were not neutralized with NaHCO 3 . More details of the 111 synthesis and characterization of hydrogel derived from cellulose 112 acetate are presented by Senna et al [8]. 113 Fourier transform infrared spectroscopy (FTIR) 114 The FTIR spectrum was obtained after grinding the sample into Table 1 to obtain the results of Table 2.…”

Enhanced oil recovery from fractured carbonate reservoir using membrane technology

“…The key is to lock solute in the matrix to attract water, hence displace oil by increasing the hydrostatic pressure. Materials suitable to establish the membrane include polyhydroxy compounds (Moawed and El-Shahat, 2013), galactomannans crosslinked with boric acid (Ratcliffe et al, 2013), and cellulose acetate (commonly used in dialysis) (Senna et al, 2014). The membrane can also be prepared with inorganic materials.…”

A new thermoset for separation of polystyrene and naphthalene in preparative chromatography

“…CA can be used in a variety of processes such as nano filtration and reverse osmosis, and in the production of numerous materials, such as dialysis membranes, matrices for the controlled release of drugs, fabrics for the textile industry, packaging, photographic films, and cigarette filters . In recent years, our research group has specialized in preparing polymeric networks known as gels, derived from commercial CA and used in a range of important applications . The gels are polymeric networks formed by covalent bonds or physical interactions between constituent chains, and they can be obtained from natural or synthetic polymers.…”