Interaction between hydrophobically modified 2-hydroxyethyl cellulose and sodium dodecyl sulfate studied by viscometry and two-dimensional NOE NMR spectroscopy

Jen Ting Lo, Hsiao Ting Yen, Chih Chang Tsai, Bing Hung Chen, Sheng Shu Hou

研究成果: Article

12 引文 (Scopus)

摘要

Interaction between an anionic surfactant, sodium dodecyl sulfate (SDS), and a nonionic polymer, 2-hydroxyethyl cellulose (HEC) hydrophobically modified with benzoyl chloride (bmHEC), is studied by viscometry and two-dimensional nuclear Overhauser effect NMR spectroscopy (2D NOESY) in a semidilute regime of bmHEC. The hydrophobicity of bmHEC was varied with different substitution of benzoyl group to HEC macromolecules. In general, the low-shear viscosity of 1 wt % bmHEC aqueous solution is increased with added SDS surfactant having concentration from 0 to 0.5 wt %, and then decreased significantly with a further addition of surfactant to 3 wt %. The activation energy of transient network formation in 1 wt % bmHEC aqueous solution present with SDS surfactant is found to be dependent with SDS concentration, which varies from 32.7 to 69.80 kJ/mol. The maximum activation energy takes place when 0.5 wt % SDS is added, which coincides with that of the maximal viscosity. The 2D NOESY displays that the surfactants actually interact with bmHEC not only on the hydrophobes, namely benzoyl groups, but also the polymer backbone, i.e., glucose units. In contrast, no interaction is revealed by 2D NOESY in the aqueous system containing SDS surfactant and HEC polymer.

原文English
頁(從 - 到)6922-6930
頁數9
期刊Journal of Physical Chemistry B
118
發行號24
DOIs
出版狀態Published - 2014 六月 19

指紋

viscometry
Viscosity measurement
Sodium dodecyl sulfate
sodium sulfates
cellulose
Cellulose
Sodium Dodecyl Sulfate
Nuclear magnetic resonance spectroscopy
Surface-Active Agents
surfactants
Surface active agents
nuclear magnetic resonance
spectroscopy
Polymers
interactions
polymers
Activation energy
viscosity
activation energy
Overhauser effect

All Science Journal Classification (ASJC) codes

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

引用此文

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title = "Interaction between hydrophobically modified 2-hydroxyethyl cellulose and sodium dodecyl sulfate studied by viscometry and two-dimensional NOE NMR spectroscopy",
abstract = "Interaction between an anionic surfactant, sodium dodecyl sulfate (SDS), and a nonionic polymer, 2-hydroxyethyl cellulose (HEC) hydrophobically modified with benzoyl chloride (bmHEC), is studied by viscometry and two-dimensional nuclear Overhauser effect NMR spectroscopy (2D NOESY) in a semidilute regime of bmHEC. The hydrophobicity of bmHEC was varied with different substitution of benzoyl group to HEC macromolecules. In general, the low-shear viscosity of 1 wt {\%} bmHEC aqueous solution is increased with added SDS surfactant having concentration from 0 to 0.5 wt {\%}, and then decreased significantly with a further addition of surfactant to 3 wt {\%}. The activation energy of transient network formation in 1 wt {\%} bmHEC aqueous solution present with SDS surfactant is found to be dependent with SDS concentration, which varies from 32.7 to 69.80 kJ/mol. The maximum activation energy takes place when 0.5 wt {\%} SDS is added, which coincides with that of the maximal viscosity. The 2D NOESY displays that the surfactants actually interact with bmHEC not only on the hydrophobes, namely benzoyl groups, but also the polymer backbone, i.e., glucose units. In contrast, no interaction is revealed by 2D NOESY in the aqueous system containing SDS surfactant and HEC polymer.",
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T1 - Interaction between hydrophobically modified 2-hydroxyethyl cellulose and sodium dodecyl sulfate studied by viscometry and two-dimensional NOE NMR spectroscopy

AU - Lo, Jen Ting

AU - Yen, Hsiao Ting

AU - Tsai, Chih Chang

AU - Chen, Bing Hung

AU - Hou, Sheng Shu

PY - 2014/6/19

Y1 - 2014/6/19

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AB - Interaction between an anionic surfactant, sodium dodecyl sulfate (SDS), and a nonionic polymer, 2-hydroxyethyl cellulose (HEC) hydrophobically modified with benzoyl chloride (bmHEC), is studied by viscometry and two-dimensional nuclear Overhauser effect NMR spectroscopy (2D NOESY) in a semidilute regime of bmHEC. The hydrophobicity of bmHEC was varied with different substitution of benzoyl group to HEC macromolecules. In general, the low-shear viscosity of 1 wt % bmHEC aqueous solution is increased with added SDS surfactant having concentration from 0 to 0.5 wt %, and then decreased significantly with a further addition of surfactant to 3 wt %. The activation energy of transient network formation in 1 wt % bmHEC aqueous solution present with SDS surfactant is found to be dependent with SDS concentration, which varies from 32.7 to 69.80 kJ/mol. The maximum activation energy takes place when 0.5 wt % SDS is added, which coincides with that of the maximal viscosity. The 2D NOESY displays that the surfactants actually interact with bmHEC not only on the hydrophobes, namely benzoyl groups, but also the polymer backbone, i.e., glucose units. In contrast, no interaction is revealed by 2D NOESY in the aqueous system containing SDS surfactant and HEC polymer.

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