TY  - JOUR
KW  - Chain length; Esterification; Esters; Sodium chloride; Turbidity
KW  -  Behavior studies; Chloride concentrations; Cloud points; Ethylene oxides; Hydrophilic heads; Ionic surfactants; ionic-nonionic; salinity
KW  -  Nonionic surfactants
ID  - scholars5473
N2  - The synthesis and cloud point behavior of high oleate ester-derived nonionic surfactants are now reported. The effect of various polyethoxylate chain lengths (polyethylene glycol with 7, 11, and 16 units of ethylene oxide (EO) monomer) as the surfactant's hydrophilic head on the cloud point was investigated. The effect of varying amounts of sodium chloride and five different ionic surfactants on the cloud points of the synthesized nonionic surfactants were also presented. When the chain length of polyethoxylate increased, the cloud point of the synthesized nonionic surfactant also increased, ranging from 16°C, 43°C, and 64°C for 7, 11, and 16 EO units, respectively. Increments in sodium chloride concentration depressed the cloud point values of the synthesized nonionic surfactants linearly. The addition of ionic surfactants elevated the cloud points of the synthesized nonionic surfactant. However, in the presence of sodium chloride, the cloud point of the mixed ionic-nonionic solution was suppressed and anincrease in ionic surfactant concentration was required to elevate the cloud point. It was also found that the cloud points of synthesized surfactants can be raised up to 95°C in the presence of 4wt NaCl solution. © 2014 Copyright Taylor & Francis Group, LLC.
IS  - 3
VL  - 35
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896086528&doi=10.1080%2f01932691.2013.783492&partnerID=40&md5=b4e9469bf1c1bbcc9e81056ac0354ca3
A1  - Mushtaq, M.
A1  - Tan, I.M.
A1  - Ismail, L.
A1  - Lee, S.Y.C.
A1  - Nadeem, M.
A1  - Sagir, M.
JF  - Journal of Dispersion Science and Technology
Y1  - 2014///
SP  - 322
TI  - Oleate Ester-Derived Nonionic Surfactants: Synthesis and Cloud Point Behavior Studies
N1  - cited By 22
AV  - none
EP  - 328
SN  - 01932691
PB  - Taylor and Francis Inc.
ER  -