Study on scratch behavior and application of a novel cardanol-based additive in polypropylene

We demonstrated an innovative strategy to synthesize a biobased multifunctional anti-scratch agent (BCP) based on biomass cardanol, and its properties impact for polypropylene (PP) was investigated. The scratch behavior analyses show that incorporation of BCP tremendously ameliorates scratch visibility, greatly decreases scratch depth, color difference and kinetic friction coefficient for PP, which owing to the lubricating layer induced by BCP migration onto the polymer surface . Meanwhile, the addition of BCP greatly increases the initial thermal decomposition temperature of PP and improves the impact strength , mainly benefitting from BCP intramolecular synergism. Furthermore, the constituting concept of novel green BEP enriches the design of polymer additives , with potential expansion into other biomass functionalization with multifunctional variations.