Preparation of methacrylamide-functionalized crosslinked chitosan by free radical polymerization for the removal of lead ions

Sutirman, Zetty Azalea; Sanagi, Mohd Marsin; Karim, Khairil Juhanni Abd; Ibrahim, Wan Aini Wan

doi:10.1016/j.carbpol.2016.06.076

Cited by 90 publications

(44 citation statements)

References 28 publications

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“…25 For both spectra of MMs and GMMs, the peaks at 1636 cm À1 correspond to N-H stretching vibration and imine linkage (C]N) that formed between amine groups of chitosan and aldehyde groups of glutaraldehyde. 26 The peaks at 1715, 1550 cm À1 in the spectrum of GMMs are assigned to residual free carboxylic groups (-COOH) and carboxylate ions (-COO À ) respectively, indicating the successful graing of AA. 23 Furthermore, the peaks at 1041 and 625 cm À1 in the spectrum of GMMs are attributed to the stretching vibration of S]O and S-O respectively, conrming the successful graing of AMPS.…”

Section: Synthesis Of the Adsorbentsmentioning

confidence: 99%

Polymer-grafted magnetic microspheres for enhanced removal of methylene blue from aqueous solutions

Zheng

et al. 2017

RSC Adv.

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Section: Synthesis Of the Adsorbentsmentioning

confidence: 99%

Polymer-grafted magnetic microspheres for enhanced removal of methylene blue from aqueous solutions

Zheng

et al. 2017

RSC Adv.

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“…The optimum conditions for the preparation of the grafted polymers were realized when the chitosan:styrene weight ratio was 1:3, the quantity of APS was 0.4 g, and the reaction time and temperature were 3 h and 60 °C, respectively. In another example, methacrylamide was grafted onto crosslinked chitosan using APS as free radical initiator . This grafted polymer was used in adsorption studies as sorbent material for removal of Pb(II) ions from aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Design of Porous Microparticles Based on Chitosan and Methacrylic Monomers

Vasiliu¹,

Lungan²,

Gugoasa

et al. 2019

ChemistrySelect

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Starting from glycidyl methacrylate, three dimethacrylic monomers (mono, di and triethylene glycol dimethacrylate) and chitosan, various types of porous microparticles were obtained by suspension polymerization technique. Also, using the same technique the un‐grafted porous microparticles were obtained by reaction between glycidyl methacrylate and dimethacrylic monomers. The successful grafting reaction of chitosan onto synthetic polymer networks was highlighted by FTIR spectroscopy, scanning electron microscopy, atomic force microscopy and thermogravimetric analysis. The dimensional analysis of all type of microparticles was performed by laser diffraction while the specific surface areas were determined by means of dynamic vapor sorption. Grafting of polysaccharide onto crosslinked networks has led to the preparation of polymeric materials with high specific surface area (50‐160 m2/g) and better swelling capacities (101‐106%) compared to microparticles based on glycidyl methacrylate and dimethacrylic monomers [(31‐69 m2/g) and (39‐57%), respectively]. Furthermore, the sorption properties of grafted and un‐grafted microparticles were tested using Cu(II) solution. The highest retention capacity value of Cu(II) (41.7 mg/g) was obtained when the C1 microparticles were used in the adsorption studies.

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“…Among adsorbents proposed, chitosan is a common choice; this compound is a linear polysaccharide composed of β-(1,4)-linked d -glucosamine (deacetylated unit) and N -acetyl- d -glucosamine (acetylated unit). The chitosan is obtained from chitin, a structural element in the exoskeleton of crustaceans, and its adsorption capacity is affected by the pH of the medium; in consequence, chitosan chemical modifications had been made [ 14 , 16 , 17 ]. Composites containing chitosan also had been widely studied, and they had proved to be efficient in heavy metals removal [ 18 , 19 , 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Inulin Replacing Chitosan in a Polyurethane/Polysaccharide Material for Pb2+ Removal

et al. 2017

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Downstream waste from industry and other industrial processes could increase concentration of heavy metals in water. These pollutants are commonly removed by adsorption because it is an effective and economical method. Previously, we reported adsorption capacity of a chitosan/polyurethane/titanium dioxide (TiO2) composite for three ions in a dynamic wastewater system. There, increasing the chitosan concentration in composite increased the cation removal as well; however, for ratios higher than 50% of chitosan/TiO2, the manufacturing cost increased significantly. In this work, we address the manufacturing cost problem by proposing a new formulation of the composite. Our hypothesis is that inulin could replace chitosan in the composite formulation, either wholly or in part. In this exploratory research, three blends were prepared with a polyurethane matrix using inulin or/and chitosan. Adsorption was evaluated using a colorimetric method and the Langmuir and Freundlich models. Fourier-transform infrared spectroscopy (FTIR) spectra, scanning electron microscopy (SEM) micrographs, differential scanning calorimetry and thermogravimetric analysis curves were obtained to characterize blends. Results indicate that blends are suitable for toxic materials removal (specifically lead II, Pb2+). Material characterization indicates that polysaccharides were distributed in polyurethane’s external part, thus improving adsorption. Thermal degradation of materials was found above 200 °C. Comparing the blends data, inulin could replace chitosan in part and thereby improve the cost efficiency and scalability of the production process of the polyurethane based-adsorbent. Further research with different inulin/chitosan ratios in the adsorbent and experiments with a dynamic system are justified.

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Preparation of methacrylamide-functionalized crosslinked chitosan by free radical polymerization for the removal of lead ions

Cited by 90 publications

References 28 publications

Polymer-grafted magnetic microspheres for enhanced removal of methylene blue from aqueous solutions

Polymer-grafted magnetic microspheres for enhanced removal of methylene blue from aqueous solutions

Design of Porous Microparticles Based on Chitosan and Methacrylic Monomers

Evaluation of Inulin Replacing Chitosan in a Polyurethane/Polysaccharide Material for Pb2+ Removal

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