Graft copolymer based on (sodium alginate-g-acrylamide): Characterization and study of Water swelling capacity, metal ion sorption, flocculation and resistance to biodegradability

Sand, Arpit; Vyas, Aparna; Gupta, A. K.

doi:10.1016/j.ijbiomac.2015.11.085

Cited by 26 publications

(23 citation statements)

References 15 publications

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“…The band near 3400 cm −1 that corresponds to the stretching vibration of –OH groups of sodium alginate [25,46,47,48,49] can be seen in both AMD/ALg I (Figure 3a,c) and AMD/ALg II (Figure 3b,d) spectra. On this band, modifications are observed in absorbance for samples obtained at the same irradiation dose as a function of sodium alginate concentration.…”

Section: Resultsmentioning

confidence: 99%

“…In the present study, the renewable and biodegradable alginate (a nontoxic, very user- and consumer-friendly polysaccharide) has been chosen to be grafted with polyacrylamide [25,26]. The goal of the paper is to present experimental results of the obtainment and characterization of a new type of polyelectrolyte, based on sodium alginate and acrylamide-sodium alginate- g -acrylamide.…”

Section: Introductionmentioning

confidence: 99%

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New Type of Sodium Alginate-g-acrylamide Polyelectrolyte Obtained by Electron Beam Irradiation: Characterization and Study of Flocculation Efficacy and Heavy Metal Removal Capacity

2019

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The goals of the paper were first the obtainment and characterization of sodium alginate-g-acrylamide polyelectrolytes by electron beam irradiation in the range of 0.5 to 2 kGy, and second, the evaluation of flocculation efficacy and heavy metal removal capacity from aqueous solutions of known concentrations. Based on sodium alginate concentration, two types of grafted polymers were obtained. Physical, chemical, and structural investigations were performed. Flocculation studies under different stirring conditions on 0.5, 0.1 and 0.2% kaolin suspension were done. The removal capacity of Cu2+ and Cr6+ ions was also investigated. The acrylamide grafting ratio on sodium alginate backbone was found up to 2000% for samples containing 1% sodium alginate and up to 500% for samples containing 2% sodium alginate. Transmittances between 98 and 100% were obtained using, in the flocculation studies, polyelectrolytes containing 2% sodium alginate in concentrations of 0.5 and 1 ppm on kaolin suspension of 0.1 wt %. The polymer concentration was found critical for kaolin suspension of 0.05 and 0.1 wt %. Polymers containing 1% sodium alginate were efficient in Cr6+ ion removal, while those containing 2% in Cu2+ ion removal.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New Type of Sodium Alginate-g-acrylamide Polyelectrolyte Obtained by Electron Beam Irradiation: Characterization and Study of Flocculation Efficacy and Heavy Metal Removal Capacity

2019

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“…The binding process was carried out at a constant temperature of 4°C. The extraction and purification of AP‐g‐(PMAA‐b‐PAM)–based MNPs (AP‐g‐PMAA‐b‐PAM‐I) were done as in literature …”

Section: Methodsmentioning

confidence: 99%

Synthesis of IONP's decorated graft copolymers and study of their magnetic force–induced wastewater treatment

Kiran

Sonker

Tungala

et al. 2019

Polymers for Advanced Techs

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Our work is focused on facile synthesis and modification of amylopectin‐grafted block copolymers by using reversible addition−fragmentation chain transfer (RAFT) polymerization technique. This technique yields polymers with controlled molecular weight and low polydispersity indexes and is feasible with a wide range of monomers. Five different grades of amylopectin‐grafted polymethacrylic acid and polyacrylamide block copolymers have been synthesized via RAFT, by varying the amount of acrylamide employing amylopectin‐based macro chain transfer agent. Graft copolymers have been upgraded as smart responsive graft copolymers, through the incorporation of iron oxide nanoparticles (IONPs) via condensation reaction. The polymeric materials have been extensively characterized by energy‐dispersive X‐ray analysis, Fourier transform infrared spectroscopy, proton magnetic resonance spectroscopy, scanning electron microscopy, ultraviolet‐visible spectroscopy, gel permeation chromatography, transmission electron microscopy, thermogravimetric analysis, and X‐ray diffraction analysis. Normal and responsive graft copolymers have been studied for removal of model contaminant (kaolin), and responsive graft copolymers have been used to remove methylene blue dye (without using any adsorbent) from water by applying external magnetic field. The upgraded block copolymers have shown best performance in wastewater treatment.

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“…Natural polysaccharides havemany advantages as they are available, less expensive,nontoxic and biodegradable [4,6,7].Sodium alginate (SA) is one of the most efficient biopolymers used in pharmaceutical and medical industries due to its biocompatibility and biodegradability [8,9]. Sodium alginate (SA) is mainly extracted from the cell walls of brown algae.It is a linear copolymer with homo-polymeric blocks of (1-4)-linkedd-mannuronate and -l-guluronate, covalently bonded together [10].Nanoparticles formation fromSAcould offer a synergistic therapeutic effect [11][12][13].Graft copolymerization with vinyl monomers using radical initiators is the most suitable method for adding new properties to SA for broadening its medical use.Acrylonitrile (AN) isone of the most frequentlyused vinyl monomersdue toitshigh grafting efficiency [14,15]. Recently, poly(acrylonitrile) (PAN) hasalso been considered as a good drug carrier [16].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of nanoparticles based on pH-sensitive alginate-g-polyacrylonitrile copolymer and its application in drug loading

et al. 2019

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IFFERENT samples of sodium alginate grafted by polyacrylonitrile copolymer were synthesized via the grafting process through a free radical polymerization mechanism. Graft structures were characterized and confirmed using Fourier Transform Infrared (FT-IR) spectroscopy and X-Ray diffraction (XRD). Thermogravimetric analysis (TGA) showed that the graft copolymers acquired higher thermal stability compared to native alginate. Moreover, its solubility in several solvents was examined as compared to that of native alginate. The main outcome of this paper was that a grafted copolymer with hydrophobic enrichment (Wt% = 150 %) of polyacrylonitrile as a core was sufficient to form stabilize colloidal system within nanoparticles have Z-average diameter equal 55 nm and sodium alginate as a shell. The SAg PAN graft copolymer showed a higher degree of swellability in the basic medium than in acidic medium. The consequence of that was the SAg-PAN graft copolymer exhibited pH-responsive properties. Moreover, the formed nanoparticles were loaded by a hydrophobic model and proofed by a transmission electron microscope (TEM).

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Graft copolymer based on (sodium alginate-g-acrylamide): Characterization and study of Water swelling capacity, metal ion sorption, flocculation and resistance to biodegradability

Cited by 26 publications

References 15 publications

New Type of Sodium Alginate-g-acrylamide Polyelectrolyte Obtained by Electron Beam Irradiation: Characterization and Study of Flocculation Efficacy and Heavy Metal Removal Capacity

New Type of Sodium Alginate-g-acrylamide Polyelectrolyte Obtained by Electron Beam Irradiation: Characterization and Study of Flocculation Efficacy and Heavy Metal Removal Capacity

Synthesis of IONP's decorated graft copolymers and study of their magnetic force–induced wastewater treatment

Synthesis of nanoparticles based on pH-sensitive alginate-g-polyacrylonitrile copolymer and its application in drug loading

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