Nitro Cellulose

Source Material

Chemical Formula for Nitrocellulose

2HNO₃+ C₆H₁₀O₅ → C₆H₈(NO₂)₂O₅ + 2H₂O

Basically ncle is the main compound in gun cotton and ping pong balls. "A typical formulation of celluloid might contain 70 to 80 parts nitrocellulose, nitrated to 11% nitrogen, 30 parts camphor, 0 to 14 parts dye, 1 to 5 parts ethyl alcohol, plus stabilizers and other agents to increase stability and reduce flammability."
So to create ncle

1. Nitric and Sulfuric acid
2. Nitrating agent (Both Nitric and Sulfuric Acids are Nitrators, so I don't know how that works out)
3. Camphor, C₁₀H₁₆O. Available here if the chemistry department does not have it.
4. Ethyl Alcohol possibly
   
5. Zinc oxide or Zinc Carbonate

Fabrication Guide to Celluloid
Quick Summary of the above link

1. Starting material of cotton, ramie, flax, jute, or wood pulp
2. Nitric and Sulfuric acid is added to starting material(cellulose)
3. Nitrate the cellulose to 11%, then rinse with water
4. Dry the ncle until there the water concentration is at 2% or less
5. Knead the ncle like bread and then add a 50% solution of camphor in alcohol
6. Add 1/15 as much Zinc oxide/Carbonate as ncle (It is mentioned that this must be added after the kneading. It is not mentioned whether or not this is necessary, so this could be dropped from the final formula.)
7. Molding/pressing. Press the Ncle into a desired shape.
   
8. Aging. The ncle has to be aged before fabrication, but since this will probably be molded from step 7, and also since the shape does not have to hold for a very long time in the rocket engine, it might not be necessary to age the ncle past an initial hardening.

And thats all I have on this subject.