Electrospinning technique was utilized to prepare healant-loaded composite fibers

with spinning solutions of polystyrene and healing agent.The morphology and composition of the resultant functional fibers were investigated by SEM

EDX

optical microscopy and FTIR.The influence of the concentration of healing agent in the spinning solution on the fibers morphology and structure was also discussed.The results indicated that the healing agent was loaded in the fibers relatively uniformly

and the amount of healant in the fibers increased gradually with its concentration in the spinning solution

whereas the spinnability declined.Composite of the asformed fibers and resin was prepared and the self-healing of micro-crack on the composite surface was observed by SEM.The healing agent in the fibers could be released under a certain temperature thus healed the micro-crack.The tensile strength of the composite increased 2.81 MPa after the self-healing process and the mechanical properties of the composite were improved obviously.