Related Experiment Video
Updated: Jan 20, 2026
10:42
Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
Published on: August 10, 2016
18.9K
Structural and Thermal Properties of Montmorillonite/Ionic Liquid Composites
Olga Alekseeva1, Andrew Noskov2, Elena Grishina1
1G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, Ivanovo 153045, Russia.
Materials (Basel, Switzerland)
|August 16, 2019
Summary
This study explores montmorillonite K10 (MMT K10) and ionic liquid (IL) composites, revealing how IL anions affect MMT K10 structure and thermal stability. The findings highlight anion-dependent interactions and altered phase transitions in MMT K10/IL composites.
Area of Science:
- Materials Science
- Nanotechnology
- Physical Chemistry
Background:
- Montmorillonite K10 (MMT K10) is a clay mineral with a developed surface area.
- Ionic liquids (ILs) are salts that are liquid at low temperatures and have tunable properties.
- Combining MMT K10 and ILs can create novel composite materials with unique characteristics.
Purpose of the Study:
- To synthesize and characterize composites of MMT K10 with various 1-butyl-3-methyl-imidazolium ([BMIm]+) based ionic liquids.
- To investigate the structural, spectral, and thermal properties of these MMT K10/IL composites.
- To determine the influence of different IL anions ([NTf2]-, [OTf]-, [DCA]-) on the composite behavior.
Main Methods:
- Dynamic light scattering (DLS) for particle size analysis.
- Scanning electron microscopy (SEM) and X-ray diffraction (XRD) for structural characterization.
- Fourier-transform infrared (FTIR) spectroscopy for interaction studies.
- Thermogravimetric analysis (TG) and differential scanning calorimetry (DSC) for thermal behavior assessment.
- Nitrogen adsorption-desorption for surface area determination.
Main Results:
- MMT K10 powder exhibits a mesoporous structure (S_BET=195 m²/g) and a narrow particle size distribution.
- FTIR analysis indicates that MMT K10/IL interactions are anion-dependent, with [DCA]- showing stronger interaction than [OTf]- and [NTf2]-.
- Composite formation leads to changes in IL phase transitions (glass transition, crystallization, melting), particularly for [BMIm][NTf2].
- IL thermal stability decreases upon composite formation, attributed to the high surface area of MMT K10.
Conclusions:
- The type of ionic liquid anion significantly influences the interaction with MMT K10 and the resulting composite properties.
- Adsorption of ILs onto MMT K10 alters their characteristic phase transitions.
- The study provides the first comprehensive analysis of anion influence on MMT K10/IL composite thermal and spectral characteristics.
Keywords:
FTIR spectraglass transition temperatureionic liquidmontmorilloniteporositythermal stabilityMore Related Videos
06:44From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
69.6K
09:39Production and Testing of Moisture Behavior and Thermal Properties of Rapeseed Straw and Ganoderma resinaceum Mycelium Bio-Composites
Published on: September 5, 2025
607
Related Concept Videos
02:42Ionic Crystal Structures
16.9K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
16.9K
02:54Molecular and Ionic Solids
19.9K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
19.9K
03:10Ionic Radii
33.3K
Ionic radius is the measure used to describe the size of an ion. A cation always has fewer electrons and the same number of protons as the parent atom; it is smaller than the atom from which it is derived. For example, the covalent radius of an aluminum atom (1s22s22p63s23p1) is 118 pm, whereas the ionic radius of an Al3+ (1s22s22p6) is 68 pm. As electrons are removed from the outer valence shell, the remaining core electrons occupying smaller shells experience a greater effective nuclear...
33.3K
00:42Ionic Bonds
129.1K
Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
129.1K
01:22Sperm Structure and Semen Composition
10.6K
During ejaculation, males release around 2-5 milliliters of semen, which is a complex mixture of mature sperm and various fluids produced by accessory glands. The mature sperm cells measure approximately 60 micrometers in length and consist of a head, neck, midpiece, and tail. The head is flattened and tapered, measuring about 4 to 5 micrometers in length. It contains a nucleus with condensed chromosomes and an acrosome, a cap-like structure filled with enzymes essential for penetrating the...
10.6K
01:21Structural Properties and Dimensions of Lumber
383
Wood's structural properties derive from fibers aligned along the tree's length, contributing significantly to its mechanical strength. Wood exhibits up to twenty times greater tensile strength along these fibers compared to across them, and generally shows better performance under compression than tension. The length of fibers varies, with hardwoods having fibers around one twenty-fifth inch long and softwoods ranging from one-eighth to one-third inch.
The strength characteristics of...
The strength characteristics of...
383