Category: 862731-66-6

He, Xi published the artcileEffect of mixed ionic liquids on chain entanglement and relaxation of poly (methyl methacrylate), Synthetic Route of 862731-66-6, the publication is Gaofenzi Xuebao (2021), 52(1), 84-93, database is CAplus.

A kind of dicationic ionic liquid (DIL) [C₈(MIM)₂][TFSI]₂ with double charged imidazole rings was successfully synthesized and mixed with a monocationic ionic liquids (MIL) [C₈ (MIM) ][TFSI]. Compared with MIL, the double imidazolium rings on the DIL cation greatly limits the vibration ability of the alkyl chain, which shows a much higher wavenumber in IR spectrum. The DIL/MIL mixtures show Arrhenius fluid behavior, and their viscosities follow the logarithmic mixing rule. With the increase of DIL content in the ILs mixtures, the viscosity and flow activation energy gradually increase, which is closely related to the mol. size and intermol. interaction of DIL. Then, the effect of mixed ILs on the entanglement and relaxation of poly (Me methacrylate) (PMMA) was extensively investigated by rheol. tests. The master curves obtained by time-temperature superposition principle show that DIL could significantly change the relaxation behavior and entanglement state of PMMA chains in mixed ILs. With increasing DIL content in the mixed ILs, both the terminal relaxation τ1 and entanglement relaxation τe of PMMA chains were retarded, and the entanglement network of the PMMA/ILs becomes more compact, showing higher plateau modulus and greater viscosity. More interaction sites could be formed between PMMA chains and DIL mols. due to its unique double imidazolium rings structure, which results in more cohesive entanglements among PMMA chains and thus restrict their relaxation. Moreover, there is a math. relationship between the rheol. parameters (such as τ₁ and τ_e) of PMMA/ILs and the viscosity of ILs mixtures, so the rheol. behavior of the system could be approx. predicted. On the other hand, thermal stability, glass transition and ion conductivity of PMMA/ILs were also discussed. The thermal decomposition temperature and glass transition temperature of PMMA/ILs increased with the DIL content, while the ionic conductivity decreased slightly.

Gaofenzi Xuebao published new progress about 862731-66-6. 862731-66-6 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid, name is 1-octyl-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imide, and the molecular formula is C16H23F6N3O2, Synthetic Route of 862731-66-6.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Lee, Sang Hyun published the artcileThe Hildebrand solubility parameters, cohesive energy densities and internal energies of 1-alkyl-3-methylimidazolium-based room temperature ionic liquids, Formula: C16H23F6N3O2, the publication is Chemical Communications (Cambridge, United Kingdom) (2005), 3469-3471, database is CAplus and MEDLINE.

The Hildebrand solubility parameters, cohesive energy densities and internal energies of 1-alkyl-3-methylimidazolium-based room temperature ionic liquids were determined by the intrinsic viscosity method and their dependencies on the length of the alkyl group analyzed.

Chemical Communications (Cambridge, United Kingdom) published new progress about 862731-66-6. 862731-66-6 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid, name is 1-octyl-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imide, and the molecular formula is C16H23F6N3O2, Formula: C16H23F6N3O2.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Zhang, Xiao-qian published the artcileCationic polymerization of p-methylstyrene in ionic liquids media, Related Products of imidazoles-derivatives, the publication is Gaofenzi Xuebao (2019), 50(4), 375-383, database is CAplus.

In this study, cationic polymerization of p-methylstyrene (p-MeSt) was studied in ionic liquid (IL) reaction media. The effects of ILs on p-MeSt cationic polymerization were analyzed through d. functional theory (DFT) and exptl. method. The influences of various initiating systems on p-MeSt cationic polymerization were investigated, and the efficiencies of various ILs as reaction solvents were discussed. The structure of the polymerization product was characterized through ¹H-NMR and FTIR characterization analyses; number-average mol. weight (M_n) and mol. weight distribution were measured through gel permeation chromatog. (GPC); a temperature recorder tracked the relationship between polymerization system temperature variation and reaction time. The results showed that a CumOH (2-phenyl-2-propanol)/BF₃·OEt₂ initiating system is relatively effective in IL media over those frequently used in cationic polymerization reactions. The products polymerized in 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl) imide ([Bmim][NTf₂]) IL media have higher mol. weight and yield (up to 99%) and narrower mol. weight distribution (M_w/M_n is ∼ 2.0) than those in traditional mol. solvents (such as CH₂Cl₂). An anal. of the effects of ILs on polymerization indicated that ILs act as inert solvents in p-MeSt cationic polymerization and do not directly participate in the polymerization reaction. The ionic environment of IL cannot inhibit a chain transfer reaction completely, but can stabilize active species and disperse pos. charges. Thus, the polymerization reaction is milder in IL media than that in traditional mol. solvents. The results of IL recovery and reuse showed that these solvents can be used as reaction medium over a number of cycles without remarkable influence on the products. Finally, the corresponding elementary reaction mechanism of the cationic polymerization of p-MeSt initiated by the CumOH/BF₃·OEt₂ system in [Bmim][NTf₂] IL media was proposed in this study. As is known, ILs are recyclable and environmentally friendly green solvents. This study expands the reaction solvent of cationic polymerization and promotes the development of green chem.

Gaofenzi Xuebao published new progress about 862731-66-6. 862731-66-6 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid, name is 1-octyl-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imide, and the molecular formula is C18H28B2O4, Related Products of imidazoles-derivatives.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Zhao, Panpan published the artcileA simple preparation method for rare-earth phosphate nano materials using an ionic liquid-driven supported liquid membrane system, Product Details of C16H23F6N3O2, the publication is Journal of Industrial and Engineering Chemistry (Amsterdam, Netherlands) (2017), 369-376, database is CAplus.

For the first time, our group has developed a novel, high-flux strategy for shape-controlled synthesis of rare earth nano-materials (CePO₄) using ionic liquid(IL)-driven supported liquid membrane (HVHP, DUPAPORE) system. The system contains three phases including a supply phase of rare earth ions, a feed phase of phosphates, and ionic liquid-driven supporting liquid membrane phase. The imidazolium IL-driven supported liquid membrane is promising for nano-synthetic reaction of CePO₄. The anion types of immersed imidazolium IL have a critical role in the formation rate of CePO₄ nano-materials. Moreover, the adding SO^2-₄ anion or adjustment of pH in supply phase containing Ce(III) ions could control effectively the morphol. of the CePO₄ nano-materials. The result can be regarded as a good example, the IL:[C₄mim][Tf₂N] -driven support liquid membrane systems can be used to prepare nano-wire and nano-sphere structures of CePO₄ with high efficiency and flux. Besides, the IL-driven supported liquid membrane can be cycled many times by using the back flush activation method.

Journal of Industrial and Engineering Chemistry (Amsterdam, Netherlands) published new progress about 862731-66-6. 862731-66-6 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid, name is 1-octyl-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imide, and the molecular formula is C10H10O3, Product Details of C16H23F6N3O2.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem