author: willem norde

... Zisman Method The critical surface tension of wetting may be evaluated from a “Zisman-plot” in which for a homologous series of liquids cos a is plotted against γLG(=γL). This usually gives a straight line. Figure 8.7 shows plots for a ...

... H H N H H Η H ' N ' H ' N ' H 1 H H H 0.7 0.6 0.5- 0.4- t- 3 h 40 min- 0.3- 0.2 0.1 t = 10 min A 0.0 250 300 350 400 450 500 550 600 Fig . 11 UV - visible reflectance spectrum and schematic presentation of the insertion of urea into a ...