Disulfide exchange assisted self healing epoxy/PDMS/graphene oxide nanocomposites
Vitrimers, a class of polymeric networks that change their topology above a threshold temperature, have been investigated in recent years. In order to further extend their properties, in this research, we demonstrate disulfide exchange assisted polydimethylsiloxane (PDMS) and graphene oxide (GO) involved epoxy vitrimers, which exhibit a reduction in glass transition temperature and storage modulus with increase in flexural strain and low temperature self healing. Stress relaxation and Arrhenius study were carried out for the analysis of vitrimeric behavior, where the prepared epoxy material displays self healing at 80 degC for 5 min, whereas a low temperature self healing (60 degC) was observed for epoxy/PDMS/GO nanocomposites.