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Organic intercalation of structure modified vermiculite
- Source :
- Journal of Colloid and Interface Science. 457:264-271
- Publication Year :
- 2015
- Publisher :
- Elsevier BV, 2015.
-
Abstract
- The experiment used cationic surfactants of different chain lengths to intercalate structure modified vermiculites. The influences of structure modification, chain length and dosage of surfactants on the intercalation behavior of vermiculites were studied, and intercalation mechanism and features of interlayer chemical reactions were discussed. Results indicate that structure modified vermiculites with different layer charge have different intercalation behavior. The basal spacing of the organic intercalated modified vermiculite is the largest when acid concentration used in structure modification is 0.003 mol/L, and increases with increasing the chain length and dosage of the organics. Molecular dynamics simulation verifies that interlayer organics align almost parallel to structure layer of vermiculite, with alkyl chain stretching to the middle of interlayer space. -N(+) groups of the three surfactants locate above the leached [SiO4], which has stronger interaction with interlayer organic cations. Electrostatic force is the main interaction force between interlayer organics and structure layer of vermiculite, and then is Van der Waals force, no chemical bond formed.
- Subjects :
- chemistry.chemical_classification
Chemistry
Intercalation (chemistry)
Inorganic chemistry
Cationic polymerization
Vermiculite
Chemical reaction
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Biomaterials
Molecular dynamics
symbols.namesake
Colloid and Surface Chemistry
Chemical bond
Chemical engineering
symbols
van der Waals force
Alkyl
Subjects
Details
- ISSN :
- 00219797
- Volume :
- 457
- Database :
- OpenAIRE
- Journal :
- Journal of Colloid and Interface Science
- Accession number :
- edsair.doi.dedup.....f5761523930333fbc47540bf540af40a