[1] Kumar A,Bisht M,Venkatesu P.Biocompatibility of ionic liquids towards protein stability:a comprehensive overview on the current understanding and their implications[J].Int J Biol Macromol,2017,96:611-651.
[2] Vekariya R L.A review of ionic liquids:applications towards catalytic organic transformations[J].Journal of Molecular Liquids,2017,227:44-60.
[3] Ren S,Hou Y,Zhang K,et al.Ionic liquids:functionalization and absorption of SO2[J].Green Energy & Environment,2018,3(3):179-190.
[4] Yoo C G,Pu Y,Ragauskas A J.Ionic liquids:promising green solvents for lignocellulosic biomass utilization[J].Current Opinion in Green and Sustainable Chemistry,2017,5:5-11.
[5] Egorova K S,Gordeev E G,Ananikov V P.Biological activity of ionic liquids and their application in pharmaceutics and medicine[J].Chem Rev,2017,117(10):7132-7189.
[6] Yang Q,Zhang Z,Sun X G,et al.Ionic liquids and derived materials for lithium and sodium batteries[J].Chem Soc Rev,2018,47(6):2020-2064.
[7] Singh S K,Savoy A W.Ionic liquids synthesis and applications:an overview[J].Journal of Molecular Liquids,2020,297:1-23.
[8] Cota I,Fernandez Martinez F.Recent advances in the synthesis and applications of metal organic frameworks doped with ionic liquids for CO2 adsorption[J].Coordination Chemistry Reviews,2017,351:189-204.
[9] Andrzejewska E.Photoinitiated polymerization in ionic liquids and its application[J].Polymer International,2017,66(3):366-381.
[10] Venkatraman V,Alsberg B K.Quantitative structure-property relationship modelling of thermal decomposition temperatures of ionic liquids[J].Journal of Molecular Liquids,2016,223:60-67.
[11] He Y,Zhang Q,Zhan X,et al.Synthesis of efficient SBA-15 immobilized ionic liquid catalyst and its performance for friedel-crafts reaction[J].Catalysis Today,2016,276:112-120.
[12] Chen X,Feng X,Jiao C.Combustion and thermal degradation properties of flame-retardant TPU based on EMIMPF6[J].Journal of Thermal Analysis and Calorimetry,2017,129(2):851-857.
[13] Sonnier R,Dumazert L,Livi S,et al.Flame retardancy of phosphorus-containing ionic liquid based epoxy networks[J].Polymer Degradation and Stability,2016,134:186-193.
[14] Zhu Z,Wei H,Wang F,et al.Ionic liquid-based monolithic porous polymers as efficient flame retardant and thermal insulation materials[J].Polymer,2019,185:121947.
[15] Szadkowski B,Marzec A,Rybinski P,et al.Characterization of ethylene-propylene composites filled with perlite and vermiculite minerals:mechanical,barrier,and flammability properties[J].Materials (Basel),2020,13(3):1-13.
[16] Shi Y Q,Fu T,Xu Y J,et al.Novel phosphorus-containing halogen-free ionic liquid toward fire safety epoxy resin with well-balanced comprehensive performance[J].Chemical Engineering Journal,2018,354:208-219.
[17] Xiao F,Wu K,Luo F,et al.An efficient phosphonate-based ionic liquid on flame retardancy and mechanical property of epoxy resin[J].Journal of Materials Science,2017,52(24):13992-14003.
[18] Xu Y J,Shi X H,Lu J H,et al.Novel phosphorus-containing imidazolium as hardener for epoxy resin aiming at controllable latent curing behavior and flame retardancy[J].Composites Part B:Engineering,2020,184:1-10.
[19] Chen X,Ma C,Jiao C.Synergistic effects between [Emim]PF6 and aluminum hypophosphite on flame retardant thermoplastic polyurethane[J].RSC Advances,2016,6(71):67409-67417.
[20] Yang X,Ge N,Hu L,et al.Synthesis of a novel ionic liquid containing phosphorus and its application in intumescent flame retardant polypropylene system[J].Polymers for Advanced Technologies,2013,24(6):568-575.
[21] He Z,Zhao Z,Xiao S,et al.Preparation of carbon-based hybrid particles and their application in microcellular foaming and flame-retardant materials[J].RSC Advances,2018,8(47):26563-26570.
[22] Maka H,Spychaj T,Pilawka R.Epoxy resin/phosphonium ionic liquid/carbon nanofiller systems:chemorheology and properties[J].Express Polymer Letters,2014,8(10):723-732.
[23] Ding Y,Wang P,Wang Z,et al.Magnesium hydroxide modified by 1-n-tetradecyl-3-carboxymethyl imidazolium chloride and its effects on the properties of LLDPE[J].Polymer Engineering & Science,2011,51(8):1519-1524.
[24] Li Y W.The study of melamine modified by imidazolium based ionic liquid [BMIM]PF6 on the flame retardancy of rigid polyurethane foam[J].Advanced Materials Research,2014,1030-1032:241-245.
[25] Cai W,Hu Y,Pan Y,et al.Self-assembly followed by radical polymerization of ionic liquid for interfacial engineering of black phosphorus nanosheets:enhancing flame retardancy,toxic gas suppression and mechanical performance of polyurethane[J].J Colloid Interface Sci,2020,561:32-45.
[26] Zhang R C,Hong S M,Koo C M.Flame retardancy and mechanical properties of polyamide 6 with melamine polyphosphate and ionic liquid surfactant-treated montmorillonite[J].Journal of Applied Polymer Science,2014,131(16):1-8.
[27] Li X,Feng Y,Chen C,et al.Highly thermally conductive flame retardant epoxy nanocomposites with multifunctional ionic liquid flame retardant-functionalized boron nitride nanosheets[J].Journal of Materials Chemistry A,2018,6(41):20500-20512.
[28] Gui H,Xu P,Hu Y,et al.Synergistic effect of graphene and an ionic liquid containing phosphonium on the thermal stability and flame retardancy of polylactide[J].RSC Advances,2015,5(35):27814-27822.
[29] Hu Y,Xu P,Gui H,et al.Effect of imidazolium phosphate and multiwalled carbon nanotubes on thermal stability and flame retardancy of polylactide[J].Composites Part A:Applied Science and Manufacturing,2015,77:147-153.
[30] Jiao C,Wang H,Chen X.Preparation of modified fly ash hollow glass microspheres using ionic liquids and its flame retardancy in thermoplastic polyurethane[J].Journal of Thermal Analysis and Calorimetry,2018,133(3):1471-1480.
[31] Jiao C,Wang H,Chen X,et al.Flame retardant and thermal degradation properties of flame retardant thermoplastic polyurethane based on HGM@[EOOEMIm][BF4][J].Journal of Thermal Analysis and Calorimetry,2018,135(6):3141-3152.
[32] Wang Y H,Wu W H,Meng W H,et al.Activated carbon spheres@NiCo2(CO3)1.5(OH)3 hybrid material modified by ionic liquids and its effects on flame retardant and mechanical properties of PVC[J].Composites Part B:Engineering,2019,179:1-8.
[33] Huang R,Guo X,Ma S,et al.Novel phosphorus-nitrogen-containing ionic liquid modified metal-organic framework as an effective flame retardant for epoxy resin[J].Polymers (Basel),2020,12(1):1-16.
[34] Xiao F,Wu K,Luo F,et al.Influence of ionic liquid-based metal-organic hybrid on thermal degradation,flame retardancy,and smoke suppression properties of epoxy resin composites[J].Journal of Materials Science,2018,53(14):10135-10146.
[35] Zhang W,Wu H,Meng W,et al.Synthesis of activated carbon and different types phosphomolybdate ionic liquid composites for flame retardancy of poly(vinyl chloride)[J].Materials Research Express,2019,6(7):1-11.
[36] Chen S,Li J,Zhu Y,et al.Increasing the efficiency of intumescent flame retardant polypropylene catalyzed by polyoxometalate based ionic liquid[J].Journal of Materials Chemistry A,2013,1(48):15242-15246.
[37] Chen S,Li J,Zhu Y,et al.Roles of anion of polyoxometalate-based ionic liquids in properties of intumescent flame retardant polypropylene[J].RSC Advances,2014,4(62):32902-32913.
[38] Chen S,Wang C,Li J.Effect of alkyl groups in organic part of polyoxo-metalates based ionic liquids on properties of flame retardant polypropylene[J].Thermochimica Acta,2016,631:51-58.
[39] Boukhriss A,Gmouh S,Hannach H,et al.Treatment of cotton fabrics by ionic liquid with PF-6 anion for enhancing their flame retardancy and water repellency[J].Cellulose,2016,23(5):3355-3364.
[40] Bentis A,Boukhriss A,Grancaric A M,et al.Flammability and combustion behavior of cotton fabrics treated by the sol gel method using ionic liquids combined with different anions[J].Cellulose,2019,26(3):2139-2153.
[41] Miyafuji H,Fujiwara Y.Fire resistance of wood treated with various ionic liquids (ILs)[J].Holzforschung,2013,67(7):787-793.
[42] Bae S Y,Shim E G,Kim D W.Effect of ionic liquid as a flame-retarding additive on the cycling performance and thermal stability of lithium-ion batteries[J].Journal of Power Sources,2013,244:266-271.
[43] Guo Q,Han Y,Wang H,et al.Flame retardant and stable Li1.5Al0.5Ge1.5(PO4)3-supported ionic liquid gel polymer electrolytes for high safety rechargeable solid-state lithium metal batteries[J].The Journal of Physical Chemistry C,2018,122(19):10334-10342.
[44] Kim H T,Kang J,Mun J,et al.Pyrrolinium-based ionic liquid as a flame retardant for binary electrolytes of lithium ion batteries[J].ACS Sustainable Chemistry & Engineering,2015,4(2):497-505.
[45] Kuo P L,Tsao C H,Hsu C H,et al.A new strategy for preparing oligomeric ionic liquid gel polymer electrolytes for high-performance and nonflammable lithium ion batteries[J].Journal of Membrane Science,2016,499:462-469.
[46] Nakagawa H,Fujino Y,Kozono S,et al.Application of nonflammable electrolyte with room temperature ionic liquids (RTILs) for lithium-ion cells[J].Journal of Power Sources,2007,174(2):1021-1026.
