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Is cellulose nanofibers flammable?

Is cellulose nanofibers flammable? Nanocellulose burns. The same thing happens with wood and wood burning.
The flash point of cellulose is 164°C, and it burns if it is heated above 164°C to the point of ignition. The flash point of paper is a little higher because of the addition of inorganic substances, and the flash point of paper is said to be between 200 and 350 degrees Celsius.
Cellulose has a melting point of 260-270℃. The melting point of cellulose is 260-270°C. The forming temperature of general-purpose plastics is 170-280°C, so it can be used as an additive for plastics.
As a countermeasure against the ignition point, adding a flame retardant to plastics is a possible option for future material development. In this case, we can add a plastic flame retardant, a cellulose flame retardant, or both to give performance.
In recent years, organohalogenated flame retardants for plastics have been disliked for their environmental impact and toxicity. This makes cellulose flame retardants a good choice. The current mainstream flame retardants for cellulose are aluminum hydroxide and phosphoric acid. In contrast, SOUFA (sodium polyborate) has been added as a new option.
SOUFA is a highly effective flame retardant for cellulose.

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