Rheologic Properties and Molecular Configuration of Polymers in Salt‐Alkali‐Surfactant Mixed Solutions

Xiaohui Xu Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, P. R. China; College of Chemical Engineering, Harbin Engineering University, Harbin, P. R. China

Fu Yang Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, P. R. China; College of Chemical Engineering, Harbin Engineering University, Harbin, P. R. China

Nan Wang Peking University, School of Pharmaceutical Sciences, Beijing, P. R. China

Minghuan Shen Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, P. R. China; College of Chemical Engineering, Harbin Engineering University, Harbin, P. R. China

Tingting Zhou Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, P. R. China; College of Chemical Engineering, Harbin Engineering University, Harbin, P. R. China

Xiangying Wang Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, P. R. China

Yilin Wang Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, P. R. China

Xingjuan Chen College of Chemical Engineering, Harbin Engineering University, Harbin, P. R. China

Jinben Wang Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, P. R. ChinaCorrespondence[email protected]

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With the vacuum sublimation freezing‐drying and rheological techniques, the salt/alkali/surfactant effects on the solution properties and the aggregate conformations of the polymers, synthesized hydrophobically modified poly (acrylamide) (HMPAM), were investigated. The experimental methods included viscosity measurements, the photomicroscopy, scan electron microscopy, and the freeze fracture transmission electron microscopy. The variety of conformations of the ultramolecular aggregates, the hydrophobical region, and the spatial network structures resulted from the hydrophobical interaction were studied. Combined results confirmed that HMPAM could form several of interesting three‐dimensional network structures either in distilled water or NaCl solution. The results have revealed the mechanism of the salt/alkali/surfactant effects on the peculiar rheological properties of the solution.

Keywords:

Financial support by the National Key Basic Research Development Program (2005cb221305) is greatly acknowledged.

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Rheologic Properties and Molecular Configuration of Polymers in Salt‐Alkali‐Surfactant Mixed Solutions

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