用表面张力法和荧光探针技术分别测定了阳离子型离子液体表面活性剂氯化1-(2-羟乙基)-3-十二烷基咪唑([C2OHC12im] Cl)在无机盐(NaX,X=Cl-,Br-,I-和Na2SO4)水溶液中的自组装参数.结果表明,反离子通过结合[C2OHC12im]+并中和其表面电荷,使[C2OHC12 im]+的临界胶束浓度(CMC)和胶束平均聚集数(Nm)等自组装参数明显改变；改变幅度按照Cl-＜Br-＜I-＜SO42-次序递增；但是反离子(Cl-、Br-和SO42-)种类对临界胶束平均聚集数(Nm.c)和胶束微极性([I1/I3]m)的影响不甚明显；随着Br-浓度增加,lgCMC线性减小,而Nm则以幂函数形式递增.
参考文献
| [1] | Dong B,Li N,Zheng L Q,et al.Surface Adsorption and Micelle Formation of Surface Active Ionic Liquids in Aqueous Solution[J].Langmuir,2007,23:4178-4182. |
| [2] | Tariq M,Podgorsek A,Ferguson J L,et al.Characteristics of Aggregation in Aqueous Solutions of Dialkylpyrrolidinium Bromides[J].J Colloid lnterface Sci,2011,360:606-616. |
| [3] | LING Jinlong,CAO Feng,XU Minhong,et al.Surface Properties and Micellization Behavior of C16 mimBr/Triton X-100 Mixture System[J].Acta Chim Sin,2011,69 (22):2658-2664 (in Chinese).凌锦龙,曹枫,徐敏虹,等.C16 mimBr/Triton X-100混合体系的表面性质和胶团化行为[J].化学学报,2011,69(22):2658-2664. |
| [4] | Vaghela N M,Sastry N V,Aswal V K.Surface Active and Aggregation Behavior of Methylimidazolium-based Ionic Liquids of Type[Cπmim][X],n=4,6,8 and[X]=Cl-,Br-and I-in Water[J].Colloid PolymSci,2011,289:309-322. |
| [5] | Rosen M J.Surfactants and Interfacial Phenomena[M].3rd Ed.New Jersey:John Wiley & Sons Inc,2004:105-242. |
| [6] | Liu X F,Dong L L,Fang Y.Synthesis and Self-Aggregation of a Hydroxyl-functionalized Imidazolium-based Ionic Liquid Surfactant in Aqueous Solution[J].J Surfact Deterg,2011,14(2):203-210. |
| [7] | Aguiar J,Carpena P,Molina-Bolívar J A,et al.On the Determination of the Critical Micelle Concentration by the Pyrene 1∶3 Ratio Method[J].J Colloid Interface Sci,2003,258 (1):116-122. |
| [8] | Varade D,Joshi T,Aswal V K,et al.Effect of Salt on the Micelles of Cetyl Pyridinium Chloride[J].Colloids Surf A,2005,259(1/3):95-101. |
| [9] | Feitosa E,Brazolin M R S,Naal R M Z G,et al.Structural Organization of Cetyltrimethylammonium Sulfate in Aqueous Solution:The Effect of Na2SO4[J].J Colloid Interface Sei,2006,299(2):883-889. |
| [10] | Pegram L M,Record Jr M T.Hofmeister Salt Effects on Surface Tension Arise from Partitioning of Anions and Cations Between Bulk Water and the Air-Water Interface[J].J Phys Chem B,2007,111 (19):5411-5417. |
| [11] | Jakubowska A.Interactions of Different Counterions with Cationic and Anionic Surfactants[J].J Colloid Inte(ace Sci,2010,346:398-404. |
| [12] | Lianos P,Zana R.Fluorescence Probe Studies of the Effect of Concentration on the State of Aggregation of Surfactants in Aqueous Solution[J].J Colloid Interface Sci,1981,84(1):100-107. |
| [13] | Kalyansundaram K,Thomas J K.Environmental Effects on Vibronic Band Intensities in Pyrene Monomer Fluorescence and Their Application in Studies of Micellar Systems[J].J Am Chem Soc,1977,99(7):2039-2044. |
| [14] | Thomas J K.Radiation-induced Reactions in Organized Assemblies[J].Chem Rev,1980,80(4):283-299. |
| [15] | Valeur B.Molecular Fluorescence Principles and Applications[M].Weinheim:Wiley-VCH Verlag GmbH,2002:56-75. |
| [16] | Bezzobotnov V Y,Borb ly S,Cser L,et al.Temperature and Concentration Dependence of Properties of Sodium Dodecyl Sulfate Micelles Determined from Small Angle Neutron Scattering Experiments[J].J Phys Chem,1988,92(20):5738-5743. |
| [17] | Sammalkorpi M,Karttunen M,Haataja M.Ionic Surfactant Aggregates in Saline Solutions:Sodium Dodecyl Sulfate(SDS)in the Presence of Excess Sodium Chloride (NaCl) or Calcium Chloride (CaCl2)[J].J Phys Chem B,2009,113 (17):5863-5870. |
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