Is it remotely possible to synthesize detectable quantities of cellulose acetate from materials available in common department stores (such as cotton balls, vinegar, and battery acid) and using tools available in a home kitchen (such as ovens, stoves, freezers, glass jars, and metal pots)? If so, how would the reagents need to be pre-processed, and what would the procedure be? If not, where do the insurmountable difficulties lie?
On a webpage titled "From Cotton to Cellulose Acetate" it is indicated that, in general, cellulose acetate is manufactured from specially prepared cellulose in a solution of 100% acetic acid with acetic anhydride. That same site goes on to specifically state that immersing cotton balls in vinegar will only result in "cotton balls that smell like pickles". Other sources add concentrated sulfuric acid into the mix. And an answer to another question on the Chemistry SE indicates that household vinegar could possibly be concentrated up to 58% using fractional freezing in a kitchen freezer.
It's difficult to tell from the sources available whether making homemade cellulose acetate is completely impossible, somewhat inconvenient, surprisingly hazardous, or merely commercially unviable.