Application of ionic liquids as plasticizers for poly(methyl methacrylate)

Scott, Mark P.; Brazel, Christopher S.; Benton, Michael G.; Mays, Jimmy W.; Holbrey, John D.; Rogers, Robin D.

doi:10.1039/b204316p

Cited by 249 publications

(176 citation statements)

References 14 publications

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“…28 Imidazolium ionic liquids have been proposed as performant plasticizers for PVC, 29 and especially for PMMA. [30][31][32][33] In this paper, it is shown that highly luminescent flexible films can be obtained by doping europium(III) complexes into a composite material consisting of PMMA and the ionic liquid 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)-imide, [C 6 mim][Tf 2 N], as the plasticizer. Different europium(III) compounds, both ionic and non-ionic complexes, have been selected: [Eu(tta) 3 3 ], where tta is 2-thenoyltrifluoroacetonate, phen is 1,10-phenanthroline, nta is 2-naphthoyltrifluoroacetonate, dpa is 2,6-pyridinedicarboxylate (dipicolinate) and choline is the 2-hydroxyethyltrimethyl ammonium cation (Fig.…”

Section: Introductionmentioning

confidence: 99%

Ionic liquid as plasticizer for europium(iii)-doped luminescent poly(methyl methacrylate) films

Lunstroot

Driesen

Nockemann

et al. 2010

Phys. Chem. Chem. Phys.

148

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Flexible luminescent polymer films were obtained by doping europium(III) complexes in blends of poly(methyl methacrylate) (PMMA) and the ionic liquid 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [C 6 3 ], where nta is 2-naphthoyltrifluoroacetonate, tta is 2-thenoyltrifluoroacetonate, phen is 1,10-phenanthroline, dpa is 2,6-pyridinedicarboxylate (dipicolinate) and choline is the 2-hydroxyethyltrimethyl ammonium cation. Bright red photoluminescence was observed for all the films upon irradiation with ultraviolet radiation. The luminescent films have been investigated by high-resolution steady-state luminescence spectroscopy and by time-resolved measurements. The polymer films doped with b-diketonate complexes are characterized by a very intense 5 D 0 -7 F 2 transition (up to 15 times more intense than the 5 D 0 -7 F 1 ) transition, whereas a marked feature of the PMMA films doped with [choline] 3 [Eu(dpa) 3 ] is the long lifetime of the 5 D 0 excited state (1.8 ms).

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Section: Introductionmentioning

confidence: 99%

Ionic liquid as plasticizer for europium(iii)-doped luminescent poly(methyl methacrylate) films

Lunstroot

Driesen

Nockemann

et al. 2010

Phys. Chem. Chem. Phys.

148

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“…It could be due to the fact that ionic liquids act both as plasticizer and as catalyst of the interface cross-linking reactions and thus speed up the cure reaction. 23,24 Curatives must dissolve in the rubber and diffuse to the active sites to react effectively for the efficient crosslinking of rubber. 25 It can be concluded that ionic liquid improved the dispersion of curing agents particularly zinc oxide in the polymer matrix, so their presence in rubber composites contributed to a considerable decrease of vulcanization time and an increase in the crosslinking efficiency.…”

Section: View Article Onlinementioning

confidence: 99%

Developing highly conducting and mechanically durable styrene butadiene rubber composites with tailored microstructural properties by a green approach using ionic liquid modified MWCNTs

et al. 2016

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We report the effect of surface modification of multi-walled carbon nanotubes (MWCNTs) by an ionic liquid, 1-ethyl-2,3-dimethylimidazolium bis(trifluoromethylsulfonyl). An apparent physical (cation-p/p-p) interaction between the ionic liquid and MWCNTs was revealed by Raman and UV-visible spectroscopies. The composite loaded with 10 phr MWCNTs exhibits impressive enhancements in tensile strength (381% increase), hardness (34% increase), and abrasion resistance. High electrical conductivity was also achieved at MWCNT loading levels beyond 3 phr loading, with a low percolation threshold (0.023 vol%) for the composites. The microstructural development of conductive networks and uniform dispersion of MWCNTs in the presence of ionic liquid were analysed by TEM and AFM. The experimentally observed mechanical and electrical properties have been compared with theoretical predictions, and confirm that the dramatic improvement in mechanics and electrical conductivity is the outcome of the extremely fine dispersion, the strong secondary network of MWCNTs and improved interaction at the interface via thermodynamically-induced adsorption and physical interlocking of polymer chains in the nanoscopic MWCNT structure. This study demonstrates a simplified and ecofriendly approach to develop multifunctional advanced materials based on ionic liquid modified MWCNT elastomer composites with a much better balance among mechanical properties, conductivity and filler content.

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“…Such a reduction of the mechanical stability can be explained by the plasticization of the polymer matrix with the IL. [71][72][73] The 'direct' casting of the films was performed because of a particular interest in industrial applications. However, additional experiments were then performed.…”

Section: Composite Filmsmentioning

confidence: 99%

New ionic liquids with hydrolytically stable anions as alternatives to hexafluorophosphate and tetrafluoroborate salts in the free radical polymerization and preparation of ion-conducting composites

Vygodskii

Sapozhnikov

Shaplov

et al. 2010

Polym J

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The main objective of this study was to replace the traditionally used hydrolytically unstable PF 6 and BF 4 ionic solvents with new, stable ionic liquids (ILs) and to investigate the potential of ILs in formulation of the polymers based on methyl methacrylate and acrylonitrile with narrow polydispersities, high yields and molecular weights. Various ILs with four anions, namely, tris(pentafluoroethyl)trifluorophosphate, trifluoromethanesulfonate, trifluoroacetate and tetracyanoborate, were tested. The influence of the IL's characteristics on the free radical polymerization process was found to be significant. Trifluoromethanesulfonate-and trifluoroacetate-based ionic solvents provide the formation of polymers with the highest molecular weight (M r E8.8Â10 5 for polyacrylonitrile (PAN) and M w E18.9Â10 5 for polymethylmethacrylate (PMMA)) in quantitative yield (PAN, 96%; PMMA, 92%). Taking into account, the high ionic conductivity and satisfactory electrochemical stability of the tetracyanoborate-based ILs, composite films derived from PAN and B(CN) 4 ILs were prepared and their physico-chemical properties were investigated. The nature of the cation strongly influences the properties of the resulting composite films, namely, their flexibility, transparency, surface morphology and ionic conductivity (the maximum conductivity was found to be 1.0Â10 À2 S cm À1 at 25 1C).

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Application of ionic liquids as plasticizers for poly(methyl methacrylate)

Cited by 249 publications

References 14 publications

Ionic liquid as plasticizer for europium(iii)-doped luminescent poly(methyl methacrylate) films

Ionic liquid as plasticizer for europium(iii)-doped luminescent poly(methyl methacrylate) films

Developing highly conducting and mechanically durable styrene butadiene rubber composites with tailored microstructural properties by a green approach using ionic liquid modified MWCNTs

New ionic liquids with hydrolytically stable anions as alternatives to hexafluorophosphate and tetrafluoroborate salts in the free radical polymerization and preparation of ion-conducting composites

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