西南石油大学学报(自然科学版) ›› 2002, Vol. 24 ›› Issue (6): 50- 52.DOI: 10.3863/j.issn.1000-2634.2002.06.015

• 油气化学工程与化工 • Previous Articles     Next Articles

DETERMINATION OF HYDROPHOBIC GROUP AGGREGATION NUMBER IN HYDROPHOBICALLY ASSOCIATING WATER2SOLUBLE POLYMER BY FLUORESCENT SPECTRUM METHOD

CHEN Hong XU Peng HAN Li-Juan LUO Ping-ya   

  1. Southwest Petroleum Institute , Nanchong Sichuan 637001 , China
  • Received:2002-03-28 Revised:1900-01-01 Online:2002-12-20 Published:2002-12-20
  • Contact: CHEN Hong

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Abstract: Aggregation number of hydrophobically associating water soluble polymer (HAWSP) in the hydrophobic domain has been examined using fluorescence probe as a function of the carbon numbers of the hydrophobic groups. The HAWSP was obtained by coOpolymerization of acrylamide , sodium acrylate and octadecyl dimethyl allyl ammonium chloride in laboratory. Both
monomer and excimer emission are observed. Three ideal assumptions are applied to simplify the calculation. The polymer concentration corresponding to the maximum of the Ie/ Im is obtained , so the aggregation number of HAWSP can be calculated. Results show that the aggregation number is in proportion to the carbon numbers of hydrophobic groups.

Key words: fluorescent probe, hydrophobic associating polymer, hydrophobic domain, aggregation number

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