ABSTRACT

Figure 26.10, and (d! e) in Figure 26.11] until the force in the direction of the wet surface exceeds the adhesive tension of emersion, te, at the polymer surface/water interface. After exceeding the adhesive tension, the three-phase contact line starts to move toward the prewetted surface, seen as (D!E) in Figure 26.9 and (C!D) in Figure 26.12. The adhesive tension in the receding process is usually less than that in the advancing process unless the surface was completely wetted by the first immersion (i.e., zero contact angle). When the complete wetting occurs on the first immersion, the first emersion line retraces the first immersion line, such is the case with O2 plasma-cleaned glass.