Solubility of Bioactive, Inorganic and Polymeric Solids in Ionic Liquids — Experimental and Prediction Perspectives

Carrera, Gonçalo V. S. M.; Branco, Luı́s C.; Nunes, Ana V. M.; Zakrzewska, Małgorzata E.

doi:10.5772/60501

Cited by 2 publications

(1 citation statement)

References 173 publications

(256 reference statements)

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“…Ionic liquids (ILs) are organic molten salts that usually appear as liquids at room temperature. ILs have a few advantages, including high solvent capacity [24][25][26], excellent chemical and thermal stability [27,28], low vapor pressure [29,30], high dielectric constant [31,32], and a wide electrochemical window [33,34]. At present, ILs have become a research hotspot in the fields of chemistry, physics, and engineering [28].…”

Section: Introductionmentioning

confidence: 99%

Ionic Liquids Facilitate the Dispersion of Branched Polyethylenimine Grafted ZIF-8 for Reinforced Epoxy Composites

Zhou

Lai

et al. 2023

Polymers

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Metal–organic frameworks (MOFs) have been previously shown as an emerging modified class of epoxy resin. In this work, we report a simple strategy for preventing zeolitic imidazolate framework (ZIF-8) nanoparticles from agglomerating in epoxy resin (EP). Branched polyethylenimine grafted ZIF-8 in ionic liquid (BPEI-ZIF-8) nanofluid with good dispersion was prepared successfully using an ionic liquid as both the dispersant and curing agent. Results indicated that the thermogravimetric curve of the composite material had no noticeable change with increasing BPEI-ZIF-8/IL content. The glass transition temperature (Tg) of the epoxy composite was reduced with the addition of BPEI-ZIF-8/IL. The addition of 2 wt% BPEI-ZIF-8/IL into EP effectively improved the flexural strength to about 21.7%, and the inclusion of 0.5 wt% of BPEI-ZIF-8/IL EP composites increased the impact strength by about 83% compared to pure EP. The effect of adding BPEI-ZIF-8/IL on the Tg of epoxy resin was explored, and its toughening mechanism was analyzed in combination with SEM images showing fractures in the EP composites. Moreover, the damping and dielectric properties of the composites were improved by adding BPEI-ZIF-8/IL.

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