Method for testing influence of salt on apparent viscosity of hydrophobic association polymer
A hydrophobic association and apparent viscosity technology, applied in the direction of measuring devices, flow characteristics, instruments, etc., can solve the problems that cannot effectively replace hydrogen bond interactions, etc., and achieve lower test costs, accurate test results, and simple test steps Effect
Inactive Publication Date: 2014-06-04
唐静
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Problems solved by technology
The hydrophobic part of the hydrophobic association polymer molecule is composed of non-polar groups, and there is only van der Waals attraction between them and water molecules, which is much weaker than the interaction hydrogen bond between water molecules, so it cannot effectively replace the interaction with water molecules. Water molecules interact with each other through hydrogen bonds
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[0025] The test method that a kind of salt that the present invention relates to the apparent viscosity influence of hydrophobic association polymer comprises the following steps:
[0026] (a) First, the hydrophobically associating polymer is prepared;
[0027] (b) Then, the hydrophobically associating polymer is dissolved into a solution of the same mass concentration by a solvent, and different amounts of NaCl are added thereto;
[0028] (c) Take the hydrophobic association polymer solutions and place them in different experimental containers;
[0029] (d) Place the experimental containers in a water bath at the same temperature;
[0030] (e) Under the stirring conditions at the same speed, the apparent viscosity of the hydrophobically associated polymer solution at different NaCl concentrations was measured by a viscometer, and the effect of the salt on the apparent viscosity of the hydrophobically associated polymer was obtained by analyzing the data. influences.
[003...
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Abstract
The invention discloses a method for testing the influence of salt on the apparent viscosity of a hydrophobic association polymer. The method comprises the following steps: 1, preparing the hydrophobic association polymer; 2, dissolving the hydrophobic association polymer in a solvent to form solutions having a same mass concentration, and respectively adding different amounts of NaCl; 3, respectively placing the hydrophobic association polymer solutions in different experiment containers; 4, respectively placing the experiment containers in water baths having a same temperature; and 5, measuring the apparent viscosity of the hydrophobic association polymer solutions under different NaCl concentrations under a same speed stirring condition through a viscometer, and analyzing data to obtain the influence of salt on the apparent viscosity of the hydrophobic association polymer. The method can be successfully applied to test the influence of salt on the apparent viscosity of the hydrophobic association polymer, and has the advantages of accurate test result, simple test steps, and substantial reduction of the test cost.
Description
technical field [0001] The invention relates to a test method for the effect of salt on the apparent viscosity of hydrophobically associated polymers. Background technique [0002] Hydrophobic association polymer refers to a water-soluble polymer with a small amount of hydrophobic groups on the hydrophilic macromolecular chain of the polymer. A small amount of hydrophobic groups are introduced into the water-soluble macromolecular chain to make its aqueous solution exhibit unique rheological properties. Above a certain polymer concentration, the hydrophobic parts associate to form a dynamic three-dimensional network structure, thereby forming a large supramolecular chain aggregate, increasing the hydrodynamic volume of the polymer, and significantly increasing the viscosity of the solution. The addition of small molecule electrolytes can increase the polarity of the solvent, enhance the hydrophobic association, and produce obvious salt resistance. Under the action of high ...
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IPC IPC(8): G01N11/00
Inventor 唐静
Owner 唐静