Enhanced aging resistance of poly(ε-caprolactone)/brewers' spent grain composites

The presented paper investigated the influence of brewers' spent grain (BSG) extrusion parameters on the photo-oxidative resistance of poly(epsilon-caprolactone)-based wood polymer composites. Filler samples characterized by the higher melanoidin content were more efficient in hindering of polymer degradation, inhibiting the decomposition of the polymer amorphous phase. As a result, deterioration of mechanical performance was limited, which was expressed by the higher values of aging factor for samples containing BSG extruded at higher temperatures.

Automated summary

This paper investigated the effects of brewers' spent grain (BSG) extrusion parameters on the photo-oxidative resistance of poly(epsilon-caprolactone)-based wood polymer composites. Filler samples with higher melanoidin content were more effective in hindering polymer degradation and inhibiting the decomposition of the polymer amorphous phase. Therefore, deterioration of mechanical performance was limited, as indicated by higher aging factor values for samples containing BSG extruded at higher temperatures.