Effect of cementing treatment with fibroin protein and glutaraldehyde on properties of deteriorated silk

To avoid the risk of damage of silk cultural relics caused by ageing of materials used for its cementing,this study used fibroin protein which has homologous and compatible with silk and glutaraldehyde to cement deteriorated silks.The breaking strength,elongation at break,flexural stiffness,moisture regain,chromatic aberration,thermal and light ageing resistance,molecular structure and surface morphology of the silk before and after cementing were investigated.The results showed that the cemented silk has the breaking strength increased by 2.75 N,elongation at break increased by 3.05%,and the softness,thermal and light aging resistance improved with little influence on its appearance and other properties,thus meeting the requirement on ″the old,such as repair of old″ in preservation of cultural relics.