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To enhance apparent viscosities in brine solutions with high salinities for associative water‐soluble polymers, a novel macromonomer (APEO): allyl‐capped octylphenoxy poly(ethylene oxide) (degree of polymerization: 14) was synthesized, and a novel tetra‐polymer (PAVO) was synthesized by copolymerizing APEO, acrylamide (AM), sodium 2‐acrylamido‐2‐methylpropane sulfonate (NaAMPS), and vinyl biphenyl...
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