Would Schweizer's reagent dissolve nitrocellulose?
Schweizer's reagent dissolves cellulose because it forms a complex with hydroxyl groups of glucose moieties. Therefore, a completely nitrated cellulose will not dissolve in Schweizer's reagent. However, the reagent is quite basic and it will cause a hydrolysis of the nitrocelulose, so it may dissolve eventually, but after precipitation it will be normal cellulose again. But there is also a good information for you: nitrocellulose easily dissolves in many organic solvents e.g., acetone, ethyl acetate, diethyl ether and so on. So once you have a nitrocellulose, you do not need to play with Schweizer's reagent.