Abstract
In an effort to determine the suitable polymerizable inverse microemulsion region in pseudoternary phase diagram (PPD), the pseudoternary system of Span80‐Tween80/isopar M/aqueous solution of acrylamide and 2‐(methacryloyloxyl) ethyl hexadecyl dimethyl ammonium bromide (DM16) was investigated at 40°C. The PPD was obtained by a combination method of turbidimetry and conductivity (CMTC). The reliability of the PPD line was checked by investigating the state of selected experimental points near the boundary line using the Pulsed Near Infrared Light Scattering (PNILS) and centrifugation. Based on the achieved PPD, a series of hydrophobically associating polyacrylamide (HAPAM) microlatex were successfully prepared by choosing the right formulation. It shows that CMTC could be used as a good method in ascertaining a polymerizable inverse microemulsion region, from which optimized HAPAM can be prepared. The factors governing the area of the polymerizable inverse microemulsion region were also discussed.
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