Document Detail

Clouding: origin of phase separation in oppositely charged polyelectrolyte/surfactant mixed solutions.
MedLine Citation:
PMID:  16471766     Owner:  NLM     Status:  PubMed-not-MEDLINE    
The phase behavior in the system of cationic modified poly(vinyl alcohol) (CPVA)-sodium dodecylsulfate (SDS)-water has been investigated. Samples were found phase separated near electroneutral mixing at CPVA concentrations < or =6%, while in a medium CPVA concentration of 7-12%, the phase separation disappeared and the system transformed into bluish homogeneous solution. At > or =13% CPVA concentrations, the mixed systems became colorless homogeneous. Preclouding phenomenon was observed in 5-8% CPVA-SDS mixed systems at an electroneutral mixing ratio. The addition of inorganic salts, such as Na2SO4, NaCl, NaBr, and NaSCN, could exclude the bluish and phase separation phenomenon that was found to be caused by the increase of clouding point in these systems. The clouding phenomenon was proven to be the origin of the phase separation in the CPVA-SDS mixed system. The ability for the inorganic salts to increase the clouding point follows the order of the Hofmeister series.
Yun Yan; Li Li; Heinz Hoffmann
Related Documents :
17037926 - Tetrabutylammonium-induced coacervation in vesicular solutions of alkyl carboxylic acid...
12833256 - Characterization of denatured proteins by hydrophobic interaction chromatography: a pre...
24397486 - Qualitative and quantitative characterisation of plasma proteins when incorporating tra...
7217266 - Improved separation of triglycerides at low temperatures by reversed-phase liquid chrom...
22164046 - A biomimetic sensor for the classification of honeys of different floral origin and the...
23989426 - Identification of organochlorine pesticides in crude extracts by mass spectrometry.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The journal of physical chemistry. B     Volume:  110     ISSN:  1520-6106     ISO Abbreviation:  J Phys Chem B     Publication Date:  2006 Feb 
Date Detail:
Created Date:  2006-02-13     Completed Date:  2006-09-28     Revised Date:  2007-03-23    
Medline Journal Info:
Nlm Unique ID:  101157530     Medline TA:  J Phys Chem B     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1949-54     Citation Subset:  -    
Bayreuther Zentrum für Kolloid und Grenzflächen, Universität Bayreuth, Gottlieb-keim Strasse 60, 95448, Germany.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Proof of single-molecule sensitivity in surface enhanced Raman scattering (SERS) by means of a two-a...
Next Document:  Amyloid beta-peptide oligomerization in silico: dimer and trimer.