Abstract: Polyester has outstanding wearability, while sericin protein has excellent biocompatibility. If they are combined together, a high functional polyester/sericin protein fabric can be produced with both remarkable wearability and biocompatibility. In this paper, polyester was first semi-encased with sucrose ester under high temperature to endue it with reactable groups, and then grafted with sericin protein by crosslinkage compound. SEM photograph showed that a layer of materials had been appendiculate on surface of polyester fibre. FTIR indicated that sericin protein had been grafted on polyester. DSC showed that thermal stability of polyester had been improved. XRD showed that the crystalinity degree of encased polyester decreased while that of grafted polyester treated by acetic acid increased slightly. The wearablity of sericin protein/polyester was also studied. The results shows that sericin protein was fastened on the surface of polyester fabric. With the increase of sericin protein content on polyester, the moisture region increased monotonously; antistatic property was improved; the cockle elasticity decreased a little and flexural stiffness increased dramatically. Soft treatment was applied to improve its pliancy.

Key words: polyester, sericin protein, graft, composite fabric, wearability