Why is silk soft?
Why is silk soft? The sericin in silk has a gummy substance and acts as a glue. Sericin coats fibroin filaments so that they can stick together. One of the main factors that give silk its smooth texture is the removal of sericin from the silk fiber. This process is called degumming and makes silk soft and lustrous. Is silk soft to touch? Real silk is completely smooth to the touch, with a soft and almost waxy feeling. Further to that, if you scrunch it up a bit in your hand, you should hear a crunching noise – that sound...