Figure 2.

Adhesive strength of glass and gel phase films. (A) Glass films (10–13% w/w W_c) demonstrated virtually no adhesion to other glass films. Gel phase films (38–41% w/w W_c) demonstrated greater adhesion when paired with either a glass phase film or another gel phase film. Representative data is shown; arrows demonstrate peak adhesion. (B) The adhesion strength of glass-glass films was significantly less than gel-glass or gel-gel interactions (p < 0.0001) (N = 40 films; error bars ± 1 SD). Both orientations of the gel-glass and glass-gel films in the adhesion test fixture were evaluated to control for fixture or gravity influences. (C) The area of the bubbles reflects relative adhesion strength of the different mixtures scaled to 100.