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. 2018 Feb 11;10(2):176. doi: 10.3390/polym10020176

Figure 5.

Figure 5

Effect of the weight ratio of peptides and PAE resin on lap shear strength of plywood specimens bonded with the peptides-PAE adhesive. The components of the adhesive system were reacted for 120 min, and the plywood specimens were hot pressed at 120 °C and 3.5 MPa for five minutes. Error bars are the standard deviation of six plywood specimen measurements. Specimens that delaminated when soaked in water are indicated (DL). Means that do not share a letter are significantly different (Tukey, 95% confidence level). The minimum shear strength requirements as specified by ASTM D4690 are shown: 2.344 MPa for dry shear strength; 1.93 M. Figure adopted with copyright permission from MDPI (for Adhikari et al., 2016).