Organophilic Bentonites. I. Swelling in Organic Liquids.

Jordan, John W.

doi:10.1021/j150467a009

Cited by 318 publications

(184 citation statements)

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“…The intercalates may be arranged in different ways like monolayer, bilayer and paraffin types. The basal spacing for alkylammonium-MMT compounds are ≈13.6Å (for monolayer) and ≈17.7Å (for bilayer) respectively [30][31][32][33] . In the present investigation the basal spacing of Gly-MMT and Gly-Gly-MMT were found to be 12.7Å and 13.3Å respectively, wherein it was 15.1Å for Na-MMT.…”

Section: Scheme 1 Synthesis Of Gly-mmt and Gly-gly-mmtmentioning

confidence: 99%

Investigations on Microstructural and Layer Disorder Parameters of Na-Montmorillonite-Glycine Intercalation Compounds

Khan

Bała²,

Rahman

et al. 2012

Dhaka Univ. J. Sci.

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Glycine-Montmorillonite (Gly-MMT) composite has been synthesized through intercalation process using Na-Montmorillonite (Na-MMT) and glycine ethylester hydrochloride. Gly-MMT was employed for the synthesis of dipeptide (Gly-Gly-MMT). Microstructural parameters such as crystallite size, r.m.s. strain ( 1/2 ) and layer disorder parameters such as variation of interlayer spacing (g) and proportion of planes affected by such defects (γ) of the samples have been calculated by X-ray line profile analysis. In comparison to Na-MMT the basal spacings (d001) of Gly-MMT and Gly-Gly-MMT were reduced by 2.4Å and 1.8Å respectively. The value of d001 of Gly-Gly-MMT (13.3 Å) suggests the monolayer orientation of dipeptide into interlayer spaces. It is also suggested that more homogeneity in the stacking of silicate layers is attained in Gly-Gly-MMT due to the increased chain length of the dipeptide and orientation in monolayer style.

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Section: Scheme 1 Synthesis Of Gly-mmt and Gly-gly-mmtmentioning

confidence: 99%

Investigations on Microstructural and Layer Disorder Parameters of Na-Montmorillonite-Glycine Intercalation Compounds

Khan

Bała²,

Rahman

et al. 2012

Dhaka Univ. J. Sci.

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“…Even neglecting this consideration and calculating the total E of the varying water-alcohol-alkylammonium mixture by means of the equation of Polder and Van Santen (1946) gives only slight variations of the permittivity (-+ 10% for E = 13, 30, and 2 ofhexanol, water, and dodecane, respectively). Nevertheless, diffuse double layers in organo-clay systems cannot be neglected (Jordan, 1949;Granquist and McAtee, 1963;Weiss, 1963;Slabaugh and St. Clair, 1969;Lagaly et al, 1972).…”

Section: The Region Of Successive Expansionmentioning

confidence: 99%

The Adsorption of n-Aliphatic Alcohols from Dilute Aqueous Solutions on RNH₃-Montmorillonites. II. Interlamellar Association of the Adsorbate

Stul

1979

Clays and clay miner.

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Abstract--The adsorption of butanol, hexanol, and octanol on alkylammonium montmoriUonites of different chain length is similar to the distribution of alcohol between an organic solvent and water in bulk solution. Successive expansion of the clay layers starts at critical alcohol/cation ratios of 0.6 or lower which are biased mean values due to the heterogeneity of the cation density of the mineral. In the interlamellar phase autoassociation of the alcohols occurs in contrast to their behavior in aqueous solution. The intrinsic association constants (kM ~7) are of the same magnitude of the values found in cyclohexane. The alcohols can associate with molecules fixed on specific sites of the mineral and on free monomers. The ratio of fixed to free monomers is of the order of 10/1.

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“…The preparation of nanocomposites can be done by several routes, such as melt compounding, in situ polymerization and solution-intercalation [18,19]. In the latter, a three-component system is prepared where the solvent dissolves the polymer and delaminates the clay.…”

Section: Introductionmentioning

confidence: 99%

Rheological properties of asphalt/SBS/clay blends

Polacco

Kříž

Filippi

et al. 2008

European Polymer Journal

142

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The effect of the addition of clay as a third component in polymer modified asphalts has been investigated. After a preliminary investigation on the binary asphalt/clay and polymer/clay blends, the tertiary blends were prepared by adding the clay and polymer to the asphalt, either separately or in the form of a premixed master batch. Intercalated nanocomposites with comparable interlayer distances and glass transition temperatures were obtained in both cases. However, the results show that the mixing procedure significantly affected the final rheological properties. The master curves built in the linear viscoelastic range and represented in both the frequency and the temperature domains help to visualize and evaluate such differences. Suggested Reviewers:Dear Professor Vancso, I'm submitting the new version, revised according to referees' suggestions. I would like to thank you and the referees for helping us in improving the quality of the paper. AbstractThe effect of the addition of clay as a third component in polymer modified asphalts has been investigated. After a preliminary investigation on the binary asphalt/clay and polymer/clay blends, the tertiary blends were prepared by adding the clay and polymer to the asphalt, either separately or in the form of a premixed master batch. Intercalated nanocomposites with comparable interlayer distances and glass transition temperatures were obtained in both cases. However, the results show that the mixing procedure significantly affected the final rheological properties. The master curves built in the linear viscoelastic range and represented in both the frequency and the temperature domains help to visualize and evaluate such differences.

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Organophilic Bentonites. I. Swelling in Organic Liquids.

Cited by 318 publications

References 1 publication

Investigations on Microstructural and Layer Disorder Parameters of Na-Montmorillonite-Glycine Intercalation Compounds

Investigations on Microstructural and Layer Disorder Parameters of Na-Montmorillonite-Glycine Intercalation Compounds

The Adsorption of n-Aliphatic Alcohols from Dilute Aqueous Solutions on RNH₃-Montmorillonites. II. Interlamellar Association of the Adsorbate

Rheological properties of asphalt/SBS/clay blends

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Organophilic Bentonites. I. Swelling in Organic Liquids.

Cited by 318 publications

References 1 publication

Investigations on Microstructural and Layer Disorder Parameters of Na-Montmorillonite-Glycine Intercalation Compounds

Investigations on Microstructural and Layer Disorder Parameters of Na-Montmorillonite-Glycine Intercalation Compounds

The Adsorption of n-Aliphatic Alcohols from Dilute Aqueous Solutions on RNH3-Montmorillonites. II. Interlamellar Association of the Adsorbate

Rheological properties of asphalt/SBS/clay blends

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The Adsorption of n-Aliphatic Alcohols from Dilute Aqueous Solutions on RNH₃-Montmorillonites. II. Interlamellar Association of the Adsorbate