I got it but I have few freeze dried sponges of fibroin and I will dissolve them in HFIP solution with PLLA particles maybe when it becomes the homogenous situation it can be transfered to lyophilization? cause I didn't find any common solvent for thia couple :/

Thank you for answer and articles you recommended:) I will use them for my project.

I've never used to HFIP solvent before, thank you very much especially for this article cause of summarize schematic about HFIP based silk sponges! I will try this method because there is no any available example only for this two component that freeze dried composite sponge and for sure salt particles. Thanks a lot:)

The last question would you mind ask that I wonder? :) Is it possible to prepare HFIP solution by HFIP solids dissolving in distilled water? Because as known It also presents as a liquid but very low amount in a bottle and additionally expensive?¿

Ok thank you so much for your answer! :)