This suggested that the imidazolium
surfactants successfully intercalated among the layers of MMTs.
The resonance signals of 3.03, 3.73, and 4.36 ppm are the chemical shifts of protons from -C[H.sub.2]C[H.sub.2]COOC[H.sub.3] and protons in imidazolium
ring can be observed apart at 7.57, 7.60, and 8.93 ppm.
[sup.1][MSIMHSO.sub.4] as demonstrated in Figure 2(b) was synthesized with purity of >99% by direct metathesis between 3-methyl-1-sulfonic acid imidazolium
chloride (MSIMCl) and [H.sub.2]S[O.sub.4] via the same method mentioned above.
This work aims at investigating 1-butyl-3-methyl imidazolium
salts as latent catalysts for anhydride-cured epoxy oligomers and at studying the properties of polymers produced on their basis.
In our investigations 5 commercially available ionic liquids containing an ethyl substituent in the imidazolium
ring (1-ethyl-3-methyl imidazolium
, [Emim]) and 1 in a pyridinium ring (1-ethylpyridinium, [Epyr]) have been investigated.
Several hypercrosslinked porous polymers incorporated with imidazolium
salts were prepared.
This result is in agreement with the general concept that imidazolium
IL tends to act as entropic drivers for the formation nanostructured materials [21,34].
In particular, it was found that polymer nanoparticles containing imidazolium
groups were able to convert epoxides with 100% selectivity and high yields to cyclic carbonates .
Investigation on Growth and Characterization of Imidazolium
Picrate: An Organic Salt, J.
A range of carbon chain length of ionic liquids can help its dissolution; however, the hydrophobicity of an ionic liquid increases with the length of the alkyl chains on the imidazolium
ring increasing, as shown elsewhere [43, 44], which leads to reduced solubility of shikimic acid.
Among the widely used organic surfactants are phosphonium, imidazolium
, stibonium compounds, and organic amines such as octadecylamine, hexadecylamine, dodecylamine, and octylamine.