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Citation: Chen Hong, Han Li-Juan, Xu Peng, Luo Ping-Ya. The Thickening Mechanism Study of Hydrophobically Modified Polyacrylamide[J]. Acta Physico-Chimica Sinica, ;2003, 19(11): 1020-1024. doi: 10.3866/PKU.WHXB20031107 shu

The Thickening Mechanism Study of Hydrophobically Modified Polyacrylamide

1.
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Engineering, Southwest Petroleum Institute, Nanchong　637001

Received Date: 2 April 2003
Available Online: 15 November 2003

Hydrophobically modified polyacrylamide(HMPAM) has been synthesized. The behavior and microstructure of HMPAM in aqueous solution, compared with polyacrylamide (PAM) have been studied by means of fluorescence and UV spectra, atomic force microscope and apparent viscosity test. The critical association concentration of HMPAM has been determined by the change of the value of I3/I1 of the fluorescence spectra. The results of fluorescence, UV and viscosity test show that with the increase of HMPAM concentration, hydrophobic domain, supermolecular aggregate and even space network structure can be formed in the solution by the hydrophobic association of HMPAM. The latter has been further confirmed by atomic force microscope. A mechanism for the increase of the viscosity of HMPAM solution has been suggested.
- Hydrophobically modified polyacrylamide;Fluorescence spectrum;UV spectrum;AFM;Apparent viscosity
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