Imperial College London

Dr Nick Brooks

Faculty of Natural SciencesDepartment of Chemistry

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 2677n.brooks Website

 
 
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Location

 

207JMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Khan:2019:10.1016/j.jcis.2018.11.021,
author = {Khan, H and Seddon, JM and Law, RV and Brooks, NJ and Robles, E and Cabral, JT and Ces, O},
doi = {10.1016/j.jcis.2018.11.021},
journal = {Journal of Colloid and Interface Science},
pages = {75--82},
title = {Effect of glycerol with sodium chloride on the Krafft point of sodium dodecyl sulfate using surface tension},
url = {http://dx.doi.org/10.1016/j.jcis.2018.11.021},
volume = {538},
year = {2019}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - The effect of glycerol with sodium chloride (NaCl) on the phase behaviour of sodium dodecyl sulfate (SDS) near the Krafft point was studied by surface tension analysis using the pendant drop method. The critical micelle concentration (CMC) and Krafft Temperature (TK) of SDS in water: glycerol mixtures, across the full composition range, and in NaCl solutions within 0.005–0.1M were obtained. The pendant drop method successfully allowed us to determine the Krafft point of SDS in high glycerol systems where other traditional methods (e.g. conductivity) have been ineffective. Overall the addition of glycerol increases the CMC and the TK, thus shifting the Krafft point of SDS to higher temperatures (increasing crystallisation temperatures) and higher SDS content in the presence of glycerol, which is interpreted as a result of the reduction in solvent polarity which opposes micellization. The addition of NaCl to the SDS – water-glycerol systems brings the CMC back down, while having no significant effect on the TK. Our results establish a robust route for tuning the Krafft point of model surfactant SDS by adjusting solvent quality and salt content.
AU - Khan,H
AU - Seddon,JM
AU - Law,RV
AU - Brooks,NJ
AU - Robles,E
AU - Cabral,JT
AU - Ces,O
DO - 10.1016/j.jcis.2018.11.021
EP - 82
PY - 2019///
SN - 0021-9797
SP - 75
TI - Effect of glycerol with sodium chloride on the Krafft point of sodium dodecyl sulfate using surface tension
T2 - Journal of Colloid and Interface Science
UR - http://dx.doi.org/10.1016/j.jcis.2018.11.021
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000458596500008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - https://www.sciencedirect.com/science/article/pii/S0021979718313341?via%3Dihub
UR - http://hdl.handle.net/10044/1/75847
VL - 538
ER -