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EFFECT OF ANIONIC SURFACTANT UPON THE VISCOSITY OF POLYMER GUAR GUM SOLUTIONS

Xiao-ming Chen

Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China

Department of Material Science and Engineering, Anhui Institute of Architecture & Industry, Hefei 230022, China

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Hai-yang Yang

Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China

Corresponding author.

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Xian You

Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China

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Ping-ping Zhu

Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China

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, and

Ping-sheng He

Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China

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Cited by:1 (Source: Crossref)

Abstract

The reduced viscosity of polymer guar gum solutions containing a certain concentration of sodium dodecyl benzene sulfonate (SDBS) was measured. It has been found that the Huggins coefficient k_H of polymer solutions is very sensitive to the concentration of the surfactant, c_SDBS, in solutions. If c_SDBS is lower than CMC, the critical micelle concentration of SDBS, k_H increases rapidly with c_SDBS. On the other hand, if c_SDBS is larger than CMC, k_H decreases rapidly with c_SDBS. Comparatively, the intrinsic viscosity of polymer solution does not show a notable change with c_SDBS. The experimental results indicate that the interchain association of polymer guar gum in solution is greatly associated with SDBS interacted with polymer chains through hydrogen bonds. However, the effect of SDBS upon the intrachain association of polymer guar gum solution is negligible, presumably due to the fact that guar gum is a slightly stiffened random-coil chain polymer.

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