eprintid: 5473
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/54/73
datestamp: 2023-11-09 16:17:12
lastmod: 2023-11-09 16:17:12
status_changed: 2023-11-09 16:01:47
type: article
metadata_visibility: show
creators_name: Mushtaq, M.
creators_name: Tan, I.M.
creators_name: Ismail, L.
creators_name: Lee, S.Y.C.
creators_name: Nadeem, M.
creators_name: Sagir, M.
title: Oleate Ester-Derived Nonionic Surfactants: Synthesis and Cloud Point Behavior Studies
ispublished: pub
keywords: Chain length; Esterification; Esters; Sodium chloride; Turbidity, Behavior studies; Chloride concentrations; Cloud points; Ethylene oxides; Hydrophilic heads; Ionic surfactants; ionic-nonionic; salinity, Nonionic surfactants
note: cited By 22
abstract: 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.
date: 2014
publisher: Taylor and Francis Inc.
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896086528&doi=10.1080%2f01932691.2013.783492&partnerID=40&md5=b4e9469bf1c1bbcc9e81056ac0354ca3
id_number: 10.1080/01932691.2013.783492
full_text_status: none
publication: Journal of Dispersion Science and Technology
volume: 35
number: 3
pagerange: 322-328
refereed: TRUE
issn: 01932691
citation:   Mushtaq, M. and Tan, I.M. and Ismail, L. and Lee, S.Y.C. and Nadeem, M. and Sagir, M.  (2014) Oleate Ester-Derived Nonionic Surfactants: Synthesis and Cloud Point Behavior Studies.  Journal of Dispersion Science and Technology, 35 (3).  pp. 322-328.  ISSN 01932691