WebSep 22, 2015 · Based on these results calibration curves, showing the absorbance versus the concentration of the polymer solution, were prepared. The PVA concentration in the solution was determined in an analogous way. To the polymer solutions of the concentrations ranging from 30 to 400 ppm, 0.005 g of the solid was added and the appropriate pH was … WebThe surface tension reduction due to this self-assembled film at low concentration is independent of the molecular weight. However, the additional surface tension reduction in the high polymer concentration regime depends strongly on the molecular weight.
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