Preparation of γ-alumina nanoparticle modified polyacrylamide composite and study on its solid phase extraction of Sunset Yellow

Li, Wanjun; Jia, Qiong; Zhang, Zhenyu; Wang, Qianqian

doi:10.1007/s11814-015-0279-4

Cited by 8 publications

(7 citation statements)

References 40 publications

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“…The third weight loss in the temperature region of 300–500 °C, indicated that the polyacrylamide composite material (16%) resulted in a higher weight loss than neat alumina material (10%). In general, this temperature region corresponds to the weight loss of polyacrylamide moieties 38 by releasing ammonia due to imidization reaction between the amide groups of monomer units 39 and thus resulting in a higher weight loss of polyacrylamide–alumina composite materials. Additionally, in this region the structural transformation of boehmite (see PXRD results in Electronic Supplementary Information) to alumina by dehydration process is also possible.…”

Section: Resultsmentioning

confidence: 99%

Real-time Particle Size Analysis Using the Focused Beam Reflectance Measurement Probe for In Situ Fabrication of Polyacrylamide–Filler Composite Materials

Sankaranarayanan

Likozar

Navia

2019

Sci Rep

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Real-time particle size analysis, using an engineered focused beam reflectance measurement (FBRM), was studied for the fabrication of chemical composite materials, applying various (inorganic/organic/biological) filler powders with polyacrylamide via the in situ polymerization production process at 80 °C for 24 h. The measured diameter dimensions, differential distribution functions and growth during reactive compound manufacturing technology were monitored by determining quantitative chord length, this being the altering scale use of FBRM technique. Materials characterizations such as formulation part-, scanning electron microscopy-, substance elemental- and complex Fourier-transform infrared spectroscopy analyses, supported well the successful structural preparation of differing-property constituent compositions. In addition, it was also observed that operations such as granulation, coating and filling, were involved in the design of stronger polymer–reinforcement components. A comparison of the surface area variation of montmorillonite (245 m 2 /g), alumina (236 m 2 /g) and residual biomass (0.8 m 2 /g) with their corresponding formed composites (112, 84 and 0.1 m 2 /g, respectively) revealed that the presence of thermoset plastic matrix results in a drop in interface due to a defined multiple step formation processing. Furthermore, thermal characterization of alumina and the developed nanocomposite materials confirmed, as expected, the interaction of the nanocomposite precursors.

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Section: Resultsmentioning

confidence: 99%

Real-time Particle Size Analysis Using the Focused Beam Reflectance Measurement Probe for In Situ Fabrication of Polyacrylamide–Filler Composite Materials

Sankaranarayanan

Likozar

Navia

2019

Sci Rep

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“…Adsorption methods based on application of efficient adsorbent are extensively employed. 12,14,15 A variety of materials such as activated carbon, 1,16 zeolite, 17 imprinted materials, 18 inorganic materials, 19,20 sorption resins, 21 and polymers 22,23 have been reported for adsorption of dyes in this technique. Nonetheless, researchers are attracted toward finding new materials to develop novel adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…22 However, the defects of swelling and shrinkage lead to weak mechanical stability when polymers are exposed to different organic solvents. 23 Recently, new polymer materials have been designed by modification with inorganic materials that have specific chemical properties, high surface-to-volume ratio, strong mechanical stability, high regenerability, and so on. 24 Chitosan, a linear polysaccharide composed of randomly distributed β-(1−4)-linked D-glucosamine (deacetylated unit) and N-acetyl-D-glucosamine (acetylated unit), is made from chitin.…”

Section: Introductionmentioning

confidence: 99%

“…It is for this reason that analytical methods have been developed, such as liquid–liquid extraction, membrane separation, solid-phase microextraction, catalysis, , and adsorption, ,,, and so forth. Adsorption methods based on application of efficient adsorbent are extensively employed. ,, A variety of materials such as activated carbon, , zeolite, imprinted materials, inorganic materials, , sorption resins, and polymers , have been reported for adsorption of dyes in this technique. Nonetheless, researchers are attracted toward finding new materials to develop novel adsorbents.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Chitosan Poly(methacrylate) Composites for Adsorption of Bromocresol Green

Liú

Yuan

et al. 2019

ACS Omega

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In the present study, chitosan poly(methacrylate) composites were prepared and applied for adsorption of bromocresol green from aqueous solutions. The synthesized composites were characterized with scanning electron microscopy, Fourier transform infrared spectroscopy, and thermogravimetric analysis. The bromocresol green removal by the developed adsorbent was investigated, and the effects of experimental parameters, including sample pH and adsorption time, were also examined. Furthermore, the adsorption characteristics of the synthesized adsorbent, including kinetics, adsorption isotherms, and thermodynamics, were comprehensively studied. The adsorption isotherm was well described by the Freundlich model, and the maximum adsorption capacity was 39.84 μg mg –1 by shaking for 40 min at pH 2.0. Bromocresol green adsorption kinetics followed a pseudo-second-order kinetic model, indicating that adsorption was the rate-limiting step. Thermodynamic parameters and the negative values of Gibbs free energy change (Δ G °) showed that adsorption was a spontaneous process. The positive values of entropy change (Δ S °) implied that the adsorption of bromocresol green on chitosan poly(methacrylate) composites was an increasing random process. In addition, enthalpy change (Δ H °) values were positive, suggesting that the adsorption of bromocresol green was endothermic. The adsorption percentage of bromocresol green with chitosan poly(methacrylate) composites remained above 97% after three times of recycling test.

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Synthesis of γ-alumina nano powder from Nepheline syenite

Chitan

Hosseini

Salari

et al. 2016

Korean J. Chem. Eng.

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Preparation of γ-alumina nanoparticle modified polyacrylamide composite and study on its solid phase extraction of Sunset Yellow

Cited by 8 publications

References 40 publications

Real-time Particle Size Analysis Using the Focused Beam Reflectance Measurement Probe for In Situ Fabrication of Polyacrylamide–Filler Composite Materials

Real-time Particle Size Analysis Using the Focused Beam Reflectance Measurement Probe for In Situ Fabrication of Polyacrylamide–Filler Composite Materials

Preparation of Chitosan Poly(methacrylate) Composites for Adsorption of Bromocresol Green

Synthesis of γ-alumina nano powder from Nepheline syenite

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