Synthesis and characterization of a novel [beta]-cyclodextrin modified cationic polyacrylamide and its application for enhancing oil recovery

The methyl acrylamide propyl dimethyl butyl ammonium chloride (DMAPMA-C) and allyl-[beta]-cyclodextrin (A-[beta]-CD) were synthesized separately and then jointly copolymerized with acrylamide (AM) to form a novel cationic acrylamide polymer P(AM/A-[beta]-CD/DMAPMA-C) through aqueous redox free-radic...

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Bibliographic Details
Published in:Starch 2015-07, Vol.67 (7-8), p.673
Main Authors: Li, Xiaoke, Zou, Changjun, Cui, Chanchan
Format: Article
Language:eng ; fre ; ger
Subjects:
Rheology
Spectrum analysis
Online Access:Get full text
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Summary:The methyl acrylamide propyl dimethyl butyl ammonium chloride (DMAPMA-C) and allyl-[beta]-cyclodextrin (A-[beta]-CD) were synthesized separately and then jointly copolymerized with acrylamide (AM) to form a novel cationic acrylamide polymer P(AM/A-[beta]-CD/DMAPMA-C) through aqueous redox free-radical polymerization. The structure of the copolymer was characterized using Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM). Subsequently, a series of experiments were carried out to investigate its comprehensive performances, including temperature resistance, salt tolerance, aqueous stability, and sandpack flooding experiments. In addition, the rheological properties of P(AM/A-[beta]-CD/DMAPMA-C) were also tested and calculated. The results showed that P(AM/A-[beta]-CD/DMAPMA-C) possessed higher salt tolerance, temperature resistance, and aqueous stability than polyacrylamide (PAM). The rheological properties also indicated its applicability for enhanced oil recovery. The copolymer could significantly increase the oil recovery of 15.47%, which indicated its potential application for enhancing oil recovery in the oilfield.
ISSN:0038-9056
1521-379X
DOI:10.1002/star.201500022