Oxidized cellulose nanocrystal as sustainable crosslinker to fabricate carboxylated nitrile rubber composites with antibiosis, wearing and irradiation aging resistance

摘要

Oxidized cellulose nanocrystal (OCNC) prepared by H2O2 served as anchorage sites of combined Zn2+-carboxylate bonds and curing agent precursor for fabricating XNBR/OCNC/ZnO composite via in situ interfacial reactions. The novel cross-linking by OCNC influenced on the microstructure, morphology, and properties of the composites were characterized. The cross-linking of Zn2+-carboxylate networks endow the composites to achieve 295% and 200% increases in tensile strength and cross-linking density, excellent wear resistance (90% reduction in relative mass loss compared to neat XNBR), irradiation aging resistance, respectively. This study provides a universal, simple and scalable method for the fabrication of multifunctional rubber composites by constructing Zn2+-carboxylate cross-linked network with natural cellulose resources.