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- W2364721884 abstract "The multiple emulsion(MEn) under study as retardative crosslinker for aqueous polymer gels is prepared by the way of mixing 1.5% chromium acetate Cr(Ac)_3 solution and kerosene with 3% W/O emulsifier(Er) added in volume ratio(VR) 70∶30 to give a W_1/O emulsion(En) and the W_1/O En and a simulation oilfield produced water(SPW) of TSD=32 g/L and with 1% O/W Er added in VR=70∶30 to give a(W_1/O)/W_2 En.The En breakdown rate(BR) of experimental Ens is determined from the conductometric measurements of Cr(Ac)_3 content in the aqueous phase separated in 30 days of standing and shows that the MEns are much less stable than corresponding W_1/O Ens;the MEn formed with O/W Er T161, polyisobutylene-succinimide,of HLB=3.8 and W/O Er Tween20 of HLB=16.7 is much more stable than that with Span80 of HLB=4.3 and Tween20;the BR values at 30℃,50℃,and 70℃ for the 2 MEns are of 11.5%,17.8%,and 28.0% and 21.0%,56.0%,and 67.3%,respectively.The interfacial shear viscosity(ISV) between the SPW and the kerosene with T161 added is much higher than that with Span80 added,the ISV values(in mN·s/m) in 60 min at 30℃,50℃,and 70℃ are of 0.112,0.100,and 0.096 and 0.0442,0.0349,and 0.0257 when 0.3% T161 or Span80 added,respectively.Introducing 0.02% and 0.10% Tween20 into SPW leads to an increase in ISV value at 30℃ in 60 min between the SPW and the kerosene with 0.3% T161 added by 14.3% and 27.3%,respectively,and the corresponding values are of 34.9% and 65.4% in the case of Span80 used instead of T161.The much higher stability of the MEn prepared with T161/Tween20 is explained in terms of T161 molecules at W/O interfaces not easily to be replaced by Tween20 molecules." @default.
- W2364721884 created "2016-06-24" @default.
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- W2364721884 date "2005-01-01" @default.
- W2364721884 modified "2023-09-25" @default.
- W2364721884 title "A Mechanistic Study on Thermal Stability of Multiple Emulsion as Retardative Crosslinker for Aqueous Polymer Gels" @default.
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