Interaction between a nonionic surfactant and a hydrophobically modified 2-hydroxyethyl cellulose

Dongshun Bai, Cho Cho Khin, Shing Bor Chen, Chih Chang Tsai, Bing Hung Chen

研究成果: Article

21 引文 (Scopus)

摘要

Interaction between the nonionic surfactant Tergitol 15-S-7 and hydrophobically modified 2-hydroxyethyl cellulose (HMHEC) was studied Theologically in a semidilute regime of HMHEC. The low-shear viscosity of HMHEC was increased with addition of surfactant from 25 to 250 ppm, in which the critical micelle concentration of surfactant was near 39 ppm, and then decreased to a value smaller than that of pure HMHEC with further addition of surfactant to 1000 ppm. An interesting shear-induced phenomenon was observed. The steady-state shear measurements show that there exist crossovers between viscosity-shear rate curves of HMHEC solutions with and without surfactant added, whereas it was not observed in the HEC-surfactant systems. Moreover, added Tergitol 15-S-7 reversed the temperature effect on the viscosity of the HMHEC solution. That is, increasing temperature to or near the cloud point raises the viscosity of the HMHEC - surfactant aggregates, in contrast to the viscosity decrease in the pure HMHEC solutions. A possible mechanism based on the necklace model and the clouding phenomenon is conjecturally introduced to explain such phenomena.

原文English
頁(從 - 到)4909-4916
頁數8
期刊Journal of Physical Chemistry B
109
發行號11
DOIs
出版狀態Published - 2005 三月 24

指紋

Nonionic surfactants
cellulose
Cellulose
surfactants
Surface-Active Agents
Surface active agents
viscosity
Poloxalene
interactions
Viscosity
shear
Shear viscosity
Critical micelle concentration
Thermal effects
Shear deformation
temperature effects
micelles
crossovers
curves

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

引用此文

Bai, Dongshun ; Khin, Cho Cho ; Chen, Shing Bor ; Tsai, Chih Chang ; Chen, Bing Hung. / Interaction between a nonionic surfactant and a hydrophobically modified 2-hydroxyethyl cellulose. 於: Journal of Physical Chemistry B. 2005 ; 卷 109, 編號 11. 頁 4909-4916.
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Interaction between a nonionic surfactant and a hydrophobically modified 2-hydroxyethyl cellulose. / Bai, Dongshun; Khin, Cho Cho; Chen, Shing Bor; Tsai, Chih Chang; Chen, Bing Hung.

於: Journal of Physical Chemistry B, 卷 109, 編號 11, 24.03.2005, p. 4909-4916.

研究成果: Article

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