Study of the Structure of Dimethyldioctadecylammonium-Montmorillonite by Small Angle X-Ray Scattering

Khatib, Karim; Pons, C. H.; Bottero, Jean-Yves; François, Michèle; Baudin, I.

doi:10.1006/jcis.1995.1258

Cited by 15 publications

(18 citation statements)

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“…In the presence of water these materials show in a previous work (17). We recall only a few specifications a strong affinity for non-or weakly polar solvents (8).…”

Section: Methodsmentioning

confidence: 90%

“…In fact DDA-Mt is an interstratified system in which organic and nonorganic cations are not distributed uniformly on the surface of the clay (17,25). Moreover a part of the DDA molecules is adsorbed on the external basal surfaces.…”

Section: Discussionmentioning

confidence: 98%

“…In a recent work (17) we have shown that the Na replacement for DDA molecules is not complete and that 27% of the cationic exchange capacity is yet saturated by Na cations. In fact DDA-Mt is an interstratified system in which organic and nonorganic cations are not distributed uniformly on the surface of the clay (17,25).…”

Section: Discussionmentioning

confidence: 98%

“…The interlayer molecules within the interlayer space of a montmorillonite distances change with the length of the alkyl chain (2). Its and adsorbed onto external surfaces (17) versus the partial value is 13.6 Å with C n £ 13 and 17.6 Å with 14 £ C n £ pressure of methanol by using 13 C CP/MAS NMR and meth-18 (3). Depending of the number of carbon atoms, the alkyl anol immersion calorimetry.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Immersion Microcalorimetry and13C CP/MAS NMR Study of the Structure of Organoclays

Khatib¹,

François²,

Tékély³

et al. 1996

Journal of Colloid and Interface Science

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“…In the presence of water these materials show in a previous work (17). We recall only a few specifications a strong affinity for non-or weakly polar solvents (8).…”

Section: Methodsmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Immersion Microcalorimetry and13C CP/MAS NMR Study of the Structure of Organoclays

Khatib¹,

François²,

Tékély³

et al. 1996

Journal of Colloid and Interface Science

Self Cite

View full text Add to dashboard Cite

“…Comparison of these results with the amounts of Na + -cation liberated upon the cation exchange process shows that the smaller the amount of Na + cation, the greater the interlamellar spacing. Two assumptions may be proposed to explain the data of metanil yellow: (i) the metanil yellow radical cation replacing the Na + cation is in a compact state in the interlamellar spacing (31,32) and (ii) some of the intercalated metanil cations are adsorbed on the edge faces of the clay layers, i.e., on the external surface of the MMT layers. The latter assumption is more convincing as concluded from the value of diffusion coefficient.…”

Section: X-ray Diffractionmentioning

confidence: 99%

Adsorption and Kinetic Studies of the Intercalation of Some Organic Compounds onto Na+-Montmorillonite

Gemeay

Elsherbiny

Zaki

2002

Journal of Colloid and Interface Science

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Effect of natural and organically modified montmorillonite clays on the properties of polydimethylsiloxane rubber

Kaneko

Yoshida

2008

J of Applied Polymer Sci

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The effects of natural (MT) and organically modified (O-MT) montmorillonite clays on the properties of polydimethylsiloxane (PDMS) rubber were evaluated. Rubber composites with different clay contents were prepared by a compounding procedure in an open two-roll mill, which was followed by a compression-molding step in which the PDMS matrix was peroxide crosslinked. The clay rubber composites were characterized by swelling measurements in toluene, thermogravimetric analyses, X-ray diffraction, scanning electron microscopy, and tensile tests. The introduction of MT restricted the solvent swelling and increased the crosslinking density of the rubber, which indicated the formation of a covalent filler-matrix interface. The enhanced interaction between MT and PDMS reduced the aggregation size of MT particles in the MT composites and promoted an increase in the separation of the clay layers. When the rubber was filled with O-MT, a higher solvent amount was incorporated in the material, and this trend increased with the clay content. Moreover, the low interaction between O-MT and the PDMS chains resulted in larger clay aggregates in the O-MT composites compared to those with MT. Despite the different interface natures, both clays enhanced thermal stability and acted as reinforcing fillers in relation to Young's modulus and tensile strength.

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Study of the Structure of Dimethyldioctadecylammonium-Montmorillonite by Small Angle X-Ray Scattering

Cited by 15 publications

References 0 publications

Immersion Microcalorimetry and13C CP/MAS NMR Study of the Structure of Organoclays

Immersion Microcalorimetry and13C CP/MAS NMR Study of the Structure of Organoclays

Adsorption and Kinetic Studies of the Intercalation of Some Organic Compounds onto Na+-Montmorillonite

Effect of natural and organically modified montmorillonite clays on the properties of polydimethylsiloxane rubber

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