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Water solubility enhancement of phthalates by cetyltrimethylammonium bromide and beta-cyclodextrin
Li, A, Univ Illinois, Sch Publ Hlth, Chicago, IL 60612 USA
2003
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume42Issue:5Pages:949-955
AbstractWater solubility enhancements of six phthalates (five aliphatic phthalates and one phenyl phthalate) by cetyltrimethylammonium bromide (CTAB) and beta-cyclodextrin (beta-CD) were studied at 25 degreesC. The solubilities of these plithalates are remarkably enhanced by CTAB solutions above the critical micelle concentration (cmc). Only marginal enhancement of phthalate solubility was observed in solutions containing CTAB below its cmc and beta-CD at low concentrations (less than 5 mM). The solubility enhancements of the plithalates are proportional to the added amount of CTAB and beta-CD. Partition coefficients of the plithalates between monomeric CTAB surfactant and water (K-MN) and between CTAB micelle and water K-MC) were estimated from the experimental data. The mechanisms of solubility enhancements by CTAB and beta-CD were discussed. A log-linear equation was proposed and evaluated for the solubilization by CTAB below cmc, while the previously proposed linear partitioning model was questioned. The structures of the complexes formed between plithalates and beta-CD were proposed, and the formation constants were estimated. The values of log K-MC, log K-MN, and log Kbeta-CD of the plithalates were found to correlate linearly with the log K-OW of plithalates, with the exception of the solid phenyl phthalate.
KeywordPolyaromatic Hydrocarbons Organic-compounds Surfactants Esters Biodegradation Environment Sorption Solutes Systems Soil
DepartmentUniv Illinois, Sch Publ Hlth, Chicago, IL 60612 USA; Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China
Subject AreaEngineering, Chemical
Indexed BySCI
Language英语
WOS IDWOS:000181302700002
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/9734
Collection期刊论文
Corresponding AuthorLi, A, Univ Illinois, Sch Publ Hlth, Chicago, IL 60612 USA
Recommended Citation
GB/T 7714
Li, A, Univ Illinois, Sch Publ Hlth, Chicago, IL 60612 USA. Water solubility enhancement of phthalates by cetyltrimethylammonium bromide and beta-cyclodextrin[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2003,42(5):949-955.
APA Li, A, Univ Illinois, Sch Publ Hlth, Chicago, IL 60612 USA.(2003).Water solubility enhancement of phthalates by cetyltrimethylammonium bromide and beta-cyclodextrin.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,42(5),949-955.
MLA Li, A, Univ Illinois, Sch Publ Hlth, Chicago, IL 60612 USA."Water solubility enhancement of phthalates by cetyltrimethylammonium bromide and beta-cyclodextrin".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 42.5(2003):949-955.
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