期刊文献+

阴阳离子表面活性剂复配体系的聚集行为 被引量:5

The Aggregation Behaviors of Anionic-cationic Surfactant Composite System
在线阅读 下载PDF
导出
摘要 用芘(Py)荧光探针法测定了添加少量十六烷基三甲基溴化胺(CTAB)后,十二烷基硫酸钠(SDS)的临界胶束浓度(CMC)和胶束聚集数(Nm)。在一定范围内,SDS的CMC与CTAB的添加量〔x=c(CTAB)/c(SDS)〕有如下定量关系:ln〔CMC/(mmol/L)〕=0.69-10.48x。当x=1/80时,SDS的胶束聚集数为92。x=1/40时,SDS的胶束聚集数为122。SDS的胶束聚集数随着CTAB的添加量迅速增加。因此,阴阳离子混合表面活性剂作为合成介孔催化剂的模板剂,可以调控介孔催化剂的孔径大小。 The critical micelle concentrations and aggregation numbers of sodium dodecyl sulfates (SDS) mixed with different low molar ratio of cetyhrimethylammonium bromide (CTAB) were tested by pyrene fluorescence probe method. The CMC of SDS has quantitative relationship with the molar ratio of x[x = c( CTAB)/c(SDS) ] :ln[ CMC/(mmol/L) ] =0. 69 - 10. 48x. The aggregation number of SDS is 92 when x = 1/80 ,and 122 when x = 1/40. This indicates that the aggregation number increases with x. Anionic-cationic surfactant composite system served as the template in the synthesis of mesoporous catalyst can control the pore size of mesoporous catalyst.
出处 《精细化工》 EI CAS CSCD 北大核心 2007年第3期225-227,286,共4页 Fine Chemicals
基金 湖南省教育厅科研项目(01C383 02C525)
关键词 临界胶束浓度 胶束聚集数 荧光探针法 SDS CTAB critical micelle concentration micelle aggregation number fluorescence probe method sodium dodecyl sulfate cetyltrimethylammonium bromide
  • 相关文献

参考文献12

  • 1Kresge C T,Leonowicz M E,Roth,et al.Ordered mesoporous molecular sieves synthesized by a liquid-crystal template mechanism[J].Nature,1992,359:710-712.
  • 2Huo Q,Margolese D I,Ciesla U,et al.Generalized synthesis of periodic surfactant/inorganic composite materials[J].Nature,1994,368:317.
  • 3Koehler R D,Raghavan S R,Kaler E W.Microstructure and dynamics of wormlike micellar solutions formed by mixing cationic and anionic surfactants[J].J Phys Chem B,2000,104(47):11035-11044.
  • 4Yin H,Mao M,Huang J,Fu H.Two-phase region in the DTAB/SL mixed surfactant system[J].Langmuir,2002,18(24):9198-9203.
  • 5Mao M,Huang J,Zhu B,Ye J.The transition from vesicles to micelles induced by octane in aqueous surfactant two-phase systems[J].J Phys Chem,B,2002,106(1):219-225.
  • 6Xiao J X,Sivars U,Tjerneld F.Phase behavior and protein partitioning in aqueous two-phase systems of cationic-anionic surfactant mixtures[J].Journal of Chromatography B:Biomedical Applications,2000,743(1-2):327-338.
  • 7Yazhuo Shang,Honglai Liu,Ying Hu,et al.Aqueous two-phase system(ATPS) containing gemini(12-3-12,2Br-) and SDS Ⅰ:phase diagram and properties of ATPS[J].Journal of Dispersion Science & Technology,2006,27(3):335-339.
  • 8Nan Y Q,Liu H L,Hu Y.Interfacial tension in phase-separated aqueous cationic/anionic surfactant mixtures[J].Journal of Colloid & Interface Science,2006,293(2):464-474.
  • 9Lu R C,Cao A N,Lai L H,et al.Interactions of β-lactoglobulin with sodium decylsulfonate,decyltriethylammonium bromide,and their mixtures[J].Journal of Colloid & Interface Science,2006,299(2):617-625.
  • 10Yan P,Chen L,Wang C,et al.Polymer effects on the equimolar mixed cationic-anionic surfactants[J].Colloids & Surfaces A:Phys Eng Asp,2005,259(1-3):55-61.

二级参考文献4

共引文献41

同被引文献54

引证文献5

二级引证文献4

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部