Removal of cations using ion-binding terpolymer involving 2-amino-6-nitro-benzothiazole and thiosemicarbazide with formaldehyde by batch equilibrium technique

Ahamed, Mohamed A. Riswan; Jeyakumar, D.; Burkanudeen, Abdul R.

doi:10.1016/j.jhazmat.2012.12.047

Cited by 20 publications

(13 citation statements)

References 24 publications

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“…Similarly, the band appeared for –C‐N stretching vibration of copolymer has been shifted from 1152 cm −1 to 1111.76 cm −1 of the blend membrane; which also supports the interaction between the copolymer and chitosan. The band appeared at 2919.88 cm −1 is assigned to –CH stretching vibration, the band at 1672.72 cm −1 is attributed to –NH 2 deformation . The strong band at 1311.27 cm −1 is assigned to C–O stretching vibrations of blend membrane which has been shifted from 1013.74 cm −1 of chitosan (Table ).…”

Section: Resultsmentioning

confidence: 93%

“…The band appeared at 2919.88 cm −1 is assigned to -CH stretching vibration, the band at 1672.72 cm −1 is attributed to -NH 2 deformation. 16,17 The strong band at 1311.27 cm −1 is assigned to C-O stretching vibrations of blend membrane which has been shifted from 1013.74 cm −1 of chitosan ( Table 2). On comparison between the data obtained between the chitosan and blend membrane, the observations clearly evidences the chitosan and copolymer interactions to form blend membranes.…”

Section: Elemental and Structural Analysismentioning

confidence: 99%

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Antibacterial chitosan-copolymer membranes for drug delivery: synthesis, characterization, drug release profile and kinetics

Azarudeen¹,

Thirumarimurugan²,

Athmiya³

et al. 2017

J. Chem. Technol. Biotechnol

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BACKGROUND New copolymeric membranes were offered for the efficient delivery of antibiotic drug using newly developed chitosan–copoly(semicarbazide–formaldehyde–phenylhydrazine) blend membranes. The membranes were characterized by elemental, spectral and scanning electron microscopy to establish the chemical structure and morphology. Swelling behavior, drug loading capacity and drug release studies was extensively studied. Furthermore, the membranes were assayed for antibacterial activity against selected bacterial strains viz. Escherichia coli, Staphylococcus aureus and Salmonella typhimurium. RESULTS The chitosan membrane had excellent loading efficiency with 85.55% whereas, if the composition of chitosan is reduced to half, the loading efficiency becomes 36.37%. The chitosan membrane released 79.31% of drug within 2.5 h, where as low chitosan content membranes have released the drug to about 24.82 and 30.34%, respectively. However, the average chitosan content membrane had shown a slow and steady drug release at 50.34 and 62.75%. CONCLUSION The composition of chitosan content also governs the swelling behavior i.e. the increased chitosan content showed excellent swelling behavior leads to profound drug delivery. The results indicate that the chitosan blend membranes have effectively released the antibiotic drug in a short time and proved to be a promising candidate for the drug delivery. The kinetic study establishes that the drug release is well fit with the Higuchi model and follows swelling and diffusion‐controlled mechanisms. © 2016 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 93%

Section: Elemental and Structural Analysismentioning

confidence: 99%

Antibacterial chitosan-copolymer membranes for drug delivery: synthesis, characterization, drug release profile and kinetics

Azarudeen¹,

Thirumarimurugan²,

Athmiya³

et al. 2017

J. Chem. Technol. Biotechnol

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“…The introducing of TC caused another crosslinking and the reaction was performed in acid aqueous solution, since both raw materials were easily dissolved in HAc solution. Schiff's base intermediates were produced by free amino groups of aminoglucose units of deacetyl CS with formaldehyde, and readily underwent addition reaction with the amino groups of TC . Since two amino groups locating on both ends of TC could separately react with two different intermediates of Schiff's bases on CS, a crosslinking structure of TCHECS would be formed.…”

Section: Resultsmentioning

confidence: 99%

“…Literature has reported that chitosan derivatives modified with Thiocarbohydrazide (TC) could stabilize silver and copper nanoparticles in their matrix . By the methods of using formaldehyde as linkages, adsorbents containing aminothiourea groups were synthesized, and water soluble CS derivatives could be synthesized smoothly …”

Section: Introductionmentioning

confidence: 99%

Thiocarbohydrazide‐modified chitosan as anticorrosion and metal ion adsorbent

et al. 2014

J of Applied Polymer Sci

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To explore the application of chitosan (CS) derivatives in anticorrosion and adsorption, thiocarbohydrazide-modified chitosan (TCHECS) derivative was synthesized and characterized. The preliminary electrochemical measurements of the behaviors of 304 steel and Cu sheets in 2% HAc (v/v) containing TCHECS, chitosan (CS), and hydrazine cross-linked epoxy-N-phthaloylchitosan (HECS) had been performed. The short-term electrochemical tests show that the new compound can act as a mixed-type metal anticorrosion inhibitor; its inhibition efficiency is 88% when the concentration was 30 mg/L. The preliminary adsorption studies for sorbents TCHECS and HECS on a metal ion mixture aqueous solution were also performed. The results show that TCHECS can absorb As (V), Ni (II), Cu (II), Cd (II), and Pb (II) efficiently at pH 9; the removal of the As (V), Ni (II), Cu (II), Cd (II), and Pb (II) are around 55.6-99.9%.

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“…The method has been applied for the determination of total chromium in seawater samples . Ethylenediamine, 2‐amino‐6‐nitrobenzothiazole and various other combinations of monomers were used to synthesize chelating terpolymer resins in our laboratory, and reported in terms of their characterization, kinetics, isotherm models and ion‐exchange properties.…”

Section: Introductionmentioning

confidence: 99%

Separation of metal ions by the influence of a cation-exchange terpolymer involving 2-amino-6-nitrobenzothiazole-ethylenediamine-formaldehyde

Ahamed¹,

Subha

Jeyakumar

et al. 2014

Polym. Int.

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A novel terpolymer involving 2-amino-6-nitrobenzothiazole and ethylenediamine with formaldehyde was synthesized by a polycondensation technique using glacial acetic acid as a reaction medium. The resulting chelating terpolymer resin was characterized using elemental analysis, physicochemical parameters, and UV-visible, Fourier transform infrared, 1 H NMR and 13 C NMR spectral studies. Average molecular weights of the terpolymer were determined using gel permeation chromatography. The surface morphology and the nature of the terpolymer were investigated using scanning electron microscopy and X-ray diffraction. The chelation ion-exchange property of the terpolymer was determined against some common metal ions such as Fe 3+ , Co 2+ , Ni 2+ , Cu 2+ , Zn 2+ and Pb 2+ using the batch equilibrium method. Effects of parameters such as the pH, contact time and various electrolyte concentrations were studied. The reusability of the terpolymer was checked in terms of its effective repeated usage. The results of the Langmuir and Freundlich adsorption isotherm models were best fitted with each other and the reaction kinetics followed pseudo second-order kinetics. The terpolymer showed good results against Fe 3+ , Cu 2+ and Ni 2+ ions compared to those against the other metal ions.

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Removal of cations using ion-binding terpolymer involving 2-amino-6-nitro-benzothiazole and thiosemicarbazide with formaldehyde by batch equilibrium technique

Cited by 20 publications

References 24 publications

Antibacterial chitosan-copolymer membranes for drug delivery: synthesis, characterization, drug release profile and kinetics

Antibacterial chitosan-copolymer membranes for drug delivery: synthesis, characterization, drug release profile and kinetics

Thiocarbohydrazide‐modified chitosan as anticorrosion and metal ion adsorbent

Separation of metal ions by the influence of a cation-exchange terpolymer involving 2-amino-6-nitrobenzothiazole-ethylenediamine-formaldehyde

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