Chitosan solution was prepared by dissolution in 2 wt% acetic
acid and stirring for 6 h. The solution was centrifuged before use.
Silk fibroin protein was isolated from B. mori silkworm coccons
following a modification of standard extraction procedure (Sofia,
McCarthy, Gronowicz, & Kaplan, 2001). SF and CS solutions each
of 2% were used for blending. The SF/CS blend ratios 2:1, 1:1, 1:2
and 1:3 were prepared volumetrically and stirred for 15–20 min for
uniform mixing.