Fig. 4: Wet adhesion behavior of PolyLA-Na/PolyLA binary synergistic adhesive patches. | Nature Communications

Fig. 4: Wet adhesion behavior of PolyLA-Na/PolyLA binary synergistic adhesive patches.

From: A self-stabilized and water-responsive deliverable coenzyme-based polymer binary elastomer adhesive patch for treating oral ulcer

Fig. 4

a Pictures showing the variation in the water contact angle of PolyLA-Na/PolyLA-1.5-0.5 patch at different times (WC: water contact angle); b The value of water contact angle of the PolyLA-Na/PolyLA adhesive patches with different compositions (n = 4); c Proposed adhesion mechanism of PolyLA-Na/PolyLA adhesive patch; d–g X-ray photoelectron spectra of dry PolyLA-Na film and PolyLA-Na/PolyLA adhesive patches with different compositions (d PolyLA-Na; e PolyLA-Na/PolyLA-1.5-1; f PolyLA-Na/PolyLA-2-1; g PolyLA-Na/PolyLA-3-1); h Adhesion strength of PolyLA-Na/PolyLA adhesive patches with different compositions to oral mucosa tissue after soaking in artificial saliva (n = 4); i Photographs showing the lap-shear process of the PolyLA-Na/PolyLA-2-1 patch adhered to oral mucosa tissue after soaking in artificial saliva. (All presented data are mean values ± SD from the mean from n = 4 independent measurements on independent samples. Statistics were calculated by one-way ANOVA followed by Tukey’s post-test).

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