Please use this identifier to cite or link to this item: https://doi.org/10.1007/s11771-007-0245-3
Title: Phase behavior and shear thickening of HM-HEC solutions with addition of nonionic surfactant C12E5
Authors: Zhao, G.-Q.
Chen, S.B. 
Keywords: Hydrophobically modified polymer
Nonionic surfactant
Phase behavior
Shear thickening
Issue Date: Feb-2007
Citation: Zhao, G.-Q., Chen, S.B. (2007-02). Phase behavior and shear thickening of HM-HEC solutions with addition of nonionic surfactant C12E5. Journal of Central South University of Technology (English Edition) 14 (1 SUPPL.) : 202-205. ScholarBank@NUS Repository. https://doi.org/10.1007/s11771-007-0245-3
Abstract: An experimental study was carried out to investigate phase and flow behavior of hydrophobically modified hydroxyethyl cellulose (HMHEC) solution with or without nonionic surfactant C12E5. Shear thickening behavior is observed at moderate shear rates for pure HMHEC solutions at modest concentrations. Shear thickening becomes less significant with increasing temperature and disappears at temperature reaching 25 °C for 0.2%(mass fraction) HMHEC. Also, the shear rate at which the maximum viscosity occurs increases with temperature. Addition of a very small amount of C 12E5, even below its critical micellar concentration, can promote the thickening and the strongest thickening occurs at around 6×10-5(mass fraction) C12E5. A further addition, however, can suppress the thickening phenomenon that eventually disappears at high enough C12E5 concentrations. It therefore implies that when the surfactant reaches a certain amount and starts to weaken the gel strength, the imposed flow can no longer enhance the networking. While the pure HMHEC solutions always remain a single phase, phase separation takes place for polymer-surfactant mixtures when the C 12E5 concentration exceeds about 1.5×10 -4. © 2007 Central South University Press, Sole distributor outside Mainland China: Springer.
Source Title: Journal of Central South University of Technology (English Edition)
URI: http://scholarbank.nus.edu.sg/handle/10635/89763
ISSN: 10059784
DOI: 10.1007/s11771-007-0245-3
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

3
checked on Dec 5, 2018

WEB OF SCIENCETM
Citations

2
checked on Nov 20, 2018

Page view(s)

33
checked on Nov 23, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.