3.2. Fiber surface and cross-sections
The degumming process forced the bave to be separated into individual brins. A. mimosae and B. mori had the thickest and smallest brin with a diameter of 49 and 10.5 μm, respectively. Fig. 7a and d shows the existence of several longitudinal striations and fibrillar structures in A. mimosae and E. bauhiniae fibers. The fibers of A. panda were distinctly unique from other species with their bamboo-like appearance with jointed nods at intervals ( Fig. 7b). G. postica fibers had relatively smooth fiber surface with occasional groves and ridges. The wild silk fibers were ribbon-like, twisted with uneven width along the fiber and their surface showed numerous irregularities such as fissures.