Fig. 7: Mechanical property of ultra-high-molecular-weight polymers generated by G3@UiO-67. | Nature Communications

Fig. 7: Mechanical property of ultra-high-molecular-weight polymers generated by G3@UiO-67.

From: Processive ring-opening metathesis polymerization of low ring strain cycloalkenes via molecularly confined catalyst

Fig. 7

a Equation for the synthesis of p(VAE) and p(VAVAE). P(VAE) = poly(vinyl acetate-co-ethylene); p(VAVAE) = poly(vinyl acetate-co-vinyl alcohol-co-ethylene). b Ultra-high-molecular-weight p(VAE) generated using G3@UiO-67 and p(VAE) generated using free G3 are compared to high-density polyethylene (HDPE), isotactic polypropylene (iPP) and random p(VAE) with 50 wt% VAc incorporation (p(VAE50)). c Image of p(VAE) (907 kg/mol) sample during tensile testing at the onset of strain-induced crystallization. d Ultra-high-molecular-weight p(VAVAE) shows 6.5-fold higher lap shear strengths than the low-molecular weight p(VAVAE), and over 10-folder higher lap shear strengths than HDPE or iPP. The inset shows the lap shear strengths of each polymer. Each experiment was independently repeated three times (n = 3). Error bars represent the standard deviation of the population (σ) calculated from these replicates.

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