采用近红外光谱技术,研究了季铵盐Gemini表面活性剂C12-S2-C12·2Br/氯仿体系中反胶团的增溶水状态,使用Peakfit解峰技术,将水的近红外光谱分为3个亚带,分别对应分散于溶剂中的水、反胶团中的类似本体水和结合水.将以上3种状态的水换算成每个表面活性剂分子对应的各种状态水分子数,即分散在溶剂中的水ns、类似本体水nf和结合水nb.向C12-S2-C12·2Br/氯仿体系中加入不同头基的离子型表面活性剂十二烷基三甲(乙)基溴化铵(DTAB、DTEB),发现随着添加剂摩尔分数αA的增大,ns和nb增大,nf减小.加入非离子表面活性剂聚乙二醇辛基苯基醚(OP-10),随着αA的增大ns减小,nb增大,nf略有增大趋势.可见加入表面活性剂头基的大小、所带电荷以及亲水性等均会对反胶团的增溶水能力和状态产生影响.
参考文献
| [1] | Siesler H W,Ozaki Y,Kawata S,et al.Near-Infrared Spectroscopy:Principles,Instruments,Applications[M].Weinheim:VileyVCH Press,2002:230-232. |
| [2] | Politi M J,Tran C D,Gao G H.Near-Infrared Spectroscopic Investigation of Inclusion Complexes Between Cyclodextrins and Aromatic Compounds[J].J Phys Chem,1995,99:14137-14141. |
| [3] | Tran C D,Lacerda S H D P.Determination of Binding Constants of Cyclodextrins in Room-temperature Ionic Liquids by Near-infrared Spectrometry[J].Anal Chem,2002,74:5337-5341. |
| [4] | Tran C D,Lacerda S D.Near-infrared Spectroscopic Investigation of Inclusion Complex Formation of Cyclodextrins in Room-temperature Ionic Liquid[J].J Inclusion Phenom Macrocycl Chem,2002,44:185-190. |
| [5] | Tran C D,Yu S.Near-infrared Spectroscopic Method for the Sensitive and Direct Determination of Aggregations of Surfactants in Various Media[J].J Colloid Interface Sci,2005,283:613-618. |
| [6] | Seno M,Araki K,Shiraishi S.Properties of Water Solubilized in Reverse Micellar Systems of Dodecylammonium Propionate in Nonpolar Solvents[J].Bull Chem Soc Jpn,197 6,49:899-903. |
| [7] | Seno M,Sawada K,Araki K,et al.Properties of Water in Hexadecyltrimethylammonium Bromide/chloroform System[J].J Colloid Interface Sci,1980,78:57-64. |
| [8] | Kondo H,Miwa I,Sunamoto J.Biphasic Structure Model for Reversed Micelles:Depressed Acid Dissociation of Excitedstate Pyranine in the Restricted Reaction Field[J].J Phys Chem,1982,86:4826-4831. |
| [9] | Goto A,Yoshioka H,Kishimoto H,et al.Calorimetric Studies on the State of Water in Reversed Micelles of Sodium Bis(2-ethylhexyl) Sulfosuccinate in Various Solvents[J].Langmuir,1992,8:441-445. |
| [10] | Goto A,Harada S,Fujita T,et al.Enthalpic Studies on the State of Water in Sodium Bis(2-ethylhexyl) Sulfosuccinate Reversed Micelles[J].Langmuir,1993,9:86-89. |
| [11] | Macdonald H,Bedwell B,Gularie E.FTIR Spectroscopy of Microemulsion Structure[J].Langmuir,1986,2:704-708. |
| [12] | Jain T K,Varshney M,Maitra A.Structural Studies of Aerosol OT Reverse Micellar Aggregates by FT-IR Spectroscopy[J].J Phys Chem,1989,93:7409-7416. |
| [13] | Li Q,Li T,Wu J G,et al.Comparative Study on the Structure of Water in Reverse Micelles Stabilized with Sodium Bis(2-ethylhexyl) Sulfosuccinate or Sodium Bis (2-ethylhexyl) Phosphate in n-Heptane[J].J Colloid Interface Sci,2000,229:298-302. |
| [14] | Zhao J X,Deng S J,Liu J Y,et al.Fourier Transform Infrared Investigation on the State of Water in Reverse Micelles of Quaternary Ammonium Gemini Surfactants C12-S-C12·2Br in n-Heptane[J].J Colloid Interface Sci,2007,311:237-242. |
| [15] | LIN Cuiying,ZHAO Jianxi.Effect of NaBr on the Ability of C12-S2-C12 ·2Br Reverse Micelles for Solubilizing Water in Chloroform[J].Acta Phys-Chim Sin,2006,22(12):1501-1505(in Chinese).林翠英,赵剑曦.NaBr对C12-S2-C12·2Br/氯仿体系中反胶团增溶水能力的影响[J].物理化学学报,2006,22(12):1501-1505. |
| [16] | YOU Yi,ZHENG Ou,QIU Yu,et al.Synthesis of Alkanediyl-α,ω-bis(dimethl Docylammonium Bromide) and Their Micelle Formation in Aqueous Solutions[J].Acta Phys-Chim Sin,2001,17(1):74-78(in Chinese).游毅,郑欧,邱羽,等.Gemini阳离子表面活性剂的合成及其胶束生成[J].物理化学学报,2001,17(1):74-78. |
| [17] | ZHAO Guoxi,XIAO Jinxin.Surface Activity of Dodecyltriammonium Bromide and Its Mixture with Sodium Dodecylsulfate[J].Acta Phys-Chim Sin,1995,11 (9):785-790(in Chinese).赵国玺,肖进新.十二烷基季铵盐及其与十二烷基硫酸钠混合体系的表面活性[J].物理化学学报,1995,11(9):785-790. |
| [18] | Booner O D,Choi T S.Hydrogen Bonding of Water in Organic Solvent[J].J Phys Chem,1974,78:1723-1727. |
| [19] | ZHAO Zaopan,ZHOU Xingyao,ZHANG Wuming,et al.Instrument Analysis[M].Beijing:Higher Education Publishing,1990:83(in Chinese).赵藻藩,周性尧,张悟铭,等.仪器分析[M].北京:高等教育出版社,1990:83. |
| [20] | Zheng O,Zhao J X,Fu X M,et al.Interfacial Composition and Structural Parameters of Water/n-Hexanol/n-Heptane Microemulsions Studied by the Dilution Method[J].Langmuir,2006,22:3528-3532. |
| [21] | Liu D J,Ma J M,Chen H M,et al.Conducting Properties of Mixed Reverse Micelles[J].Colloids Surf A,1999,148:291-297. |
| [22] | Liu D J,Ma J M,Chen H M,et al.Investifaction on the Conductivity and Microstructure of AOT/Non-ionic Surfactant/Water/n-Heptane Mixed Reverse Micelles[J].Colloids Surf A,1998,139:21-26. |
| [23] | Israelachvili J N,Mitchell D J,Ninhem B W.Theory of Self-assembly of Hydrocarbon Amphiphiles into Micelles and Bilayers[J].J Chem Soc Faraday Trans I,1976,72:1525-1568. |
| [24] | Danino D,Talmon Y,Zana R.Aggregation and Microstructure in Aqueous Solutions[J].Langmuir,1995,11:1448-1456. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%