Effects of Surfactant Carbon-Chain Length on the Phase Behaviors of ATPS

Autor:	Hongni Teng, Yong Chen, Lin-shan Hu, Ting-ting Du, Cui-ying Yang
Rok vydání:	2011
Předmět:	Aqueous solution Polymers and Plastics Inorganic chemistry Cationic polymerization Aqueous two-phase system Surfaces Coatings and Films Hydrophobic effect chemistry.chemical_compound Pulmonary surfactant chemistry Phase (matter) Molecule Physical and Theoretical Chemistry Sodium dodecyl sulfate
Zdroj:	Journal of Dispersion Science and Technology. 32:1363-1366
ISSN:	1532-2351 0193-2691
DOI:	10.1080/01932691.2010.505881
Popis:	The phase behaviors and properties of alkyl trimethyl ammonium bromide with different carbon-chain length/sodium dodecyl sulfate (SDS)/NaBr/H2O systems at the total surfactant concentration of 0.1 mol · L−1 at 333 K were investigated. The experimental results indicate that the phase behaviors of different systems have similar distributing rules. The carbon-chain length of cationic surfactant can influence the position of aqueous two-phase system region, especially for aqueous two-phase system with cationic surfactant in excess, but only have slight effect on aqueous two-phase system with anionic surfactant in excess. The ATPSc region narrows as the length of carbon-chain increases, while the trend for ATPSa is opposite. Increasing the carbon-chain length to some extent will be favorable to shortening the formation time of ATPS greatly. The investigations illustrate that the above rules result from a hydrophobic interaction relationship between surfactant molecules.
Databáze:	OpenAIRE
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