Modified uncrosslinked and crosslinked chitosan derivatives were investigated as green sorbents for the removal of copper (Cu2+) lead (Pb2+) cations from simulated solutions. In this regard, N, O carboxymethyl (N, CMC), beads (Cs-g-GA), with glutaraldehyde/methylene bisacrylamide (Cs/GA/MBA), GA/epichlorohydrin (Cs/GA/ECH) prepared characterized by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, scanning electron microscopy analyses. Atomic force...

Abstract Hydrogel composites comprised of N,O carboxymethyl chitosan crosslinked with different weight ratios acrylic acid and fabricated nanoclay particle were prepared via gamma irradiation at 25 kGy dose. The coded as CsAA 1 Cl, 2 Cl 3 based on the ratio to derivative. claimed hydrogels characterized by FTIR, TGA XRD. data implied that incorporation clay nanoparticles enhanced thermal stability composites; decomposition temperature increased up 500 °C for Cl. Three AFM outcomes used...

Abstract This research article aimed to assist the works conducted save water resources, which are rapidly depleted as a result of climate change by eliminating toxic chromium ions Cr(VI) from simulated solution. In this regard, chitosan/Na‐alginate/polyacrylic acid (CS/Na‐Alg/PAAc) and Ni/chitosan/Na‐alginate/polyacrylic (Ni@CS/Na‐Alg/PAAc) were created eco‐friendly hydrogel composites via gamma radiation. The matrix served basin for in‐situ formation Ni nanoparticles. prepared...

Heavy metal ions are discharged into water from several industries. They carcinogenic and they cause severe environmental hazards. In the present work ability of removal copper lead aqueous solutions has been studied using carboxy methyl β cyclodextrin, poly(ethylene glycol) cyclodextrin their magnetic counterparts. Effects pH, concentration ion, temperature contact time have studied. Equilibrium isotherms for adsorption metals were measured experimentally. Results analysed at different...

Abstract In the current study, performance of superabsorbent hydrogel composites comprised Guar gum-Pectin/Polyacrylamide/ZnO crosslinked with gamma irradiation (10 kGy) has been investigated for sustainable agriculture. The claimed (GG/PC/PAAm/ZnO x ) were characterized by FTIR, TGA, and AFM. swelling capacity data reveal that equilibrium water (EW) was increased increasing ZnO content from 600 to 1050 g/g zero highest concentration ZnO, respectively. Furthermore, physical properties soil...

Abstract Bio-based hydrogels (denoted as PC-PAAc/GA) comprised of Pectin (PC) and polyacrylic acid (PAAc) reinforced with different ratios gallic (GA) were prepared by gamma radiation at irradiation dose 20 kGy. The investigated analytical tools. swelling performance was studied versus time, pH the medium content. experimental data depicted that increases until equilibrium after 350 min. maximum attained pH10 for both PC-PAAc PC-PAA/GA1.5. Also, reveal incorporation GA in hydrogel matrix...

Two sets of hydrogel materials based on guar gum were prepared by grafting onto acrylic acid/acrylamide and acid/N-isopropylacrylamide copolymers using persulphate radical as an initiator N,N′ methylenebisacrylamide a cross linker. The hydrogels denoted AA-AcM-GG AA-NIPAM-GG respectively. They characterized FTIR Spectroscopy SEM. effect some composition variables the swelling performance PA-GG was thoroughly studied. Furthermore, behavior monitored function temperature electrolyte...

Abstract In this study, chitosan (Ch) is adapted via green methodology including sonication induced crosslinking with different weight ratios of erythritol (Er) from (Ch-Er) 1 to 4 . The products were casted in the form thin films. chemical modification was proved FTIR spectroscopy. Then, modified verified an atomic force microscopy (AFM) investigation for their topography and surface properties. data revealed that optimized sample 3 This further by graphene oxide 0.1, 0.2, 0.4, 0.8 wt./wt....

Abstract Sustainable packaging materials with inherent antimicrobial and antioxidant properties are increasingly demanded for food preservation. In this study, chitosan/polyacrylamide/tea tree oil (CS/PAAm/TTO) films were developed via gamma irradiation, varying both the irradiation dose (10–50 kGy) TTO concentration (25–100 μL) to attain an optimized formulation superior performance. regard, optimization was accomplished atomic force microscopy (AFM) through assessing surface morphologies...

Abstract Green nanocomposite hydrogels (ST-PHEMA/GO) comprised of starch and 2-Hydroxyethyl methacrylate (HEMA) reinforced with different ratios graphene oxide (GO) were prepared via gamma radiation induced crosslinking polymerization. The chemical structure morphology the crystallinity studied by FTIR FE-SEM, AFM, TEM XRD, respectively. swelling behavior claimed was verified versus time pH-dependent at three irradiation dose:10, 20 30 kGy also investigated. results study showed that...

The increased environmental awareness issues encouraged the manufacture of food -wares and packaging items from cellulosic materials to cope with rapid growth fast- industry. In this work, scented biofilms potent antimicrobial activity were prepared in a multi-step process assisted AFM. comprised polyvinyl alcohol (PVA) physically crosslinked different weight ratios alkaline cellulose (Na-Cell) [PVA/Na-Cell]. Then, effect gamma irradiation on surface features optimized sample (PVA/Na-Cell4)...

Methylene blue (MB) dye or methyl thioninium chloride is one of the hazardous cationic dyes that are discharged into textile effluent causing a highly negative environmental impact. The present work targets investigation adsorption performance some chitosan-modified products toward MB from simulated solutions. claimed chitosan derivatives were prepared, characterized, and applied for removal lead copper cations an aqueous medium in previous work. These include: N,O-carboxymethyl (N,O-CM/Cs),...