Bonding between polyacrylamide and smectite

Deng, Youjun; Dixon, J. B.; White, G. Norman; Loeppert, Richard H.; Juo, A. S. R.

doi:10.1016/j.colsurfa.2006.02.030

Cited by 156 publications

(82 citation statements)

References 18 publications

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“…This is in accordance with the literature, where the adsorption of acetamide onto clay is reported to occur via hydrogen bonding between the NH of the amido group and the OH of the silicate, leading to a decrease in the NH stretching frequency relative to that of "free" amido groups [10,25]. The adsorption of polyacrylamide was investigated by Deng et al [36]. They found that polyacrylamide adsorbed onto clay via its amido group by the formation of hydrogen bonds between the amido group and water molecules surrounding the interlayer cations, leading to shifts of FT-IR bands to lower wave numbers.…”

Section: Ft-ir Characterization Of Cops-mmt Met-mmt and Nipa-mmtsupporting

confidence: 85%

Adsorption of 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) and related compounds onto montmorillonite clay

Greesh

Hartmann

Cloete

et al. 2008

Journal of Colloid and Interface Science

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Section: Ft-ir Characterization Of Cops-mmt Met-mmt and Nipa-mmtsupporting

confidence: 85%

Adsorption of 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) and related compounds onto montmorillonite clay

Greesh

Hartmann

Cloete

et al. 2008

Journal of Colloid and Interface Science

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“…The main absorption band observed for polyacrylamide ferric antimonate at 3245 cm -1 can be attributed to the overlapping between the symmetric stretching vibration of NH 2 group and H 2 O, the band at 1660 cm -1 from stretching vibration of C=O, the band at 1617 cm -1 from the bending vibration of NH 2 group, the band at 1457 cm -1 from the overlapping of stretching vibration of CH 2 group band and bending mode of M-O-H. The band at 1375 cm -1 from stretching vibration of C-N band, the band at 1221 and 1120 cm -1 from the a symmetric vibration of NH 2 and C-C band (9)(10)(11)(12) and the band at 550-616cm -1 due to metal oxide band which was confirmed by thermal analysis. The IR spectra show that all metals ions exchanged as anhydrate ions as shown from Fig.…”

Section: Results and Discusionmentioning

confidence: 99%

Characterizations and Ion Exchange Behavior of A New Organic-inorganic Hybrid Cation-exchanger: Polyacrylamide Ferric Antimonate

2011

Egypt. J. Chem.

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HE POSSIBILITY to reduce the levels of heavy metals from ……aqueous waste solutions by using polyacrylamide ferric antimonate ion-exchangers has been investigated in this study. These composite ion exchangers have high chemical stability and high loading capacity. The materials were characterized using X-ray diffraction analysis, infrared spectroscopy and thermogravemetric and differential thermal analysis. The distribution coefficients and separation factors of prepared materials were calculated for Fe (III), Pb (II), Cd (II), Cu (II), and Zn (II) ions. The samples prepared show high chemical stability in water, nitric and hydrochloric acids, as well as in potassium and sodium hydroxides. All these results support the suitability of the prepared material for removals of heavy metals from aqueous waste solutions.Keywords: Characterization,Organic-inorganic hybrid and Distribution studies.Composites ion exchangers consist of one or more ion exchangers combined with another materials, which can be inorganic or organic and it may be an ion exchanger. Thus, organic-inorganic hybrid materials are expected to provide many possibilities as new composite materials. The hybrid materials usually show intermediate properties between those of plastics and glasses (ceramics). Accordingly, hybridization can be used to modify organic polymer materials or to modify inorganic materials. In addition of these characteristics, the hybrid materials can be considered as new composite materials that exhibit very different properties from their original components (organic polymer and inorganic materials) (1)(2)(3)(4)(5)(6) . Attempts are focused in this study to prepare composite ion exchangers for treatment of aqueous waste solutions. Heavy metals are nondegradable in the environment and can be harmful to a variety of living species. For this reason, the removal of these metals from aqueous waste solutions is important in terms of protection of public health and environment. The heavy metals levels in aqueous waste solutions, drinking water, and water used for agriculture should be reduced to the maximum permissible concentration (7) . Ion exchange method is one of the important procedures for removal of the heavy metals from aqueous waste solutions.

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“…In these applications, the polymer reacts mainly with the clay minerals which exist in soils, sediments, or as suspended particles. [10] The polymer-clay interactions in aqueous solutions depend on many parameters, such as polymer concentration, molecular weight (MW) and functional groups, and also on the size and shape, surface charge and concentration of the clay particles in the suspension, and pH and temperature of the suspending medium. [5][6]11] Numerous investigations have been carried out on the rheological behavior of aqueous suspensions of clay particles [e.g., [12][13][14][15][16][17][18] and polymer solutions containing nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Study on Steady Shear Rheological Behavior of Concentrated Suspensions of Sulfonated Polyacrylamide/Na-Montmorillonite Nanoparticles

Oliyaei

Aalaie

Barati

et al. 2015

Journal of Macromolecular Science, Part B

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Concentrated suspensions of sulfonated polyacrylamide (SPA)/Na C -montmorillonite (Na-MMT) were prepared and their stability and steady shear rheological properties were described as a function of nanoparticle and polymer concentration and temperature. The results showed that the Na-MMT nanoparticles suspensions were stable in the absence and presence of SPA and no sedimentation was seen. The Zaverage particle sizes for the SPA/Na-MMT suspensions increased in the presence of SPA. Rheological investigations showed that the SPA solutions and SPA/Na-MMT suspensions displayed non-Newtonian behavior in almost the whole range of shear rate. All the suspensions exhibited a shear-thinning flow character as shear rate increased. The flow curves indicated the shear viscosity and stress of the samples were decreased with increasing nanoparticles concentration up to 1.5 wt%, but for Na-MMT loading greater than 1.5 wt% there was an increase in shear viscosity and stress of the suspensions. Increasing of SPA concentration had more effect on increasing the rheological properties of SPA/Na-MMT suspensions than increasing of nanoclay content. Shear viscosity and stress of the suspensions increased with increasing SPA concentration and decreased with increasing temperature from 50 C to 70 C.

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Bonding between polyacrylamide and smectite

Cited by 156 publications

References 18 publications

Adsorption of 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) and related compounds onto montmorillonite clay

Adsorption of 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) and related compounds onto montmorillonite clay

Characterizations and Ion Exchange Behavior of A New Organic-inorganic Hybrid Cation-exchanger: Polyacrylamide Ferric Antimonate

Study on Steady Shear Rheological Behavior of Concentrated Suspensions of Sulfonated Polyacrylamide/Na-Montmorillonite Nanoparticles

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