If you put a paper inside an oven vacuum packed and go beyond 250 ∘C, will it burn? There's no oxidizer. If not, what will happen?
Answer
No, the paper will not burn without oxygen being present.
Paper is made primarily of cellulose which is a polymer of glucose.
If you heat paper in a vacuum the cellulose simply decomposes to HX2O, COX2, CO and carbon. As the paper decomposes it will "char" or turn brown to black as the cellulose polymer degrades. Here is a link to an abstract describing the process in more detail.
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