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- W2373609566 abstract "An amine terminated poly(amidoamine) dendrimer PAMAM with ethylenediamine core was synthesized by one-step polymerization and was ammoniated with n-dodecyl and n-cetyl bromides to give two macromolecular polyammonium salts,PAMAMC12 and PAMAMC16.The Mw and Mn values of the PAMAM were determined by GPC as 2237 and 1679,respectively,which indicated a relatively narrow molar mass distribution and a generation 2.2.The chemical structures of the intermediate and the target products were identified and the completeness of ammoniation was ascertained by IR and 1H NMR spectra.The results of clay swelling tests showed that the clay stabilizing ability of the two polyammonium salts were stronger than that of a PDADMAC of Mw=5000 while PAMAMC12 is better than PAMAMC16 and the optimal solution concentration was in range 2—3%.In low permeable reservoir core flooding experiments with 2% clay stabilizer solution,10 PV of PDADMAC injected caused dramatical decrease in core permeability by 65.7%,injecting two polyammonium salts led to a slight increase followed by a slow decrease in core permeability,which was a little lower than the initial values when 50 PV of PAMAMC12 injected.The permeability of artificial low permeable cores flooded was raised in different extent when 5 PV of the two polyammonium salts solution injected and kept higher than initial values when 50 PV of distilled water injected.PAMAMC12 is an excellent clay stabilizer for ultralow permeable reservoirs." @default.
- W2373609566 created "2016-06-24" @default.
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- W2373609566 date "2009-01-01" @default.
- W2373609566 modified "2023-09-25" @default.
- W2373609566 title "Synthesis and Clay Stabilizing Ability of Poly(amidoamine) Quarternary Ammonium Salts with Long Chain Alkyl Groups" @default.
- W2373609566 hasPublicationYear "2009" @default.
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